Real time view of the Lunt60+Lunt50 double stack on an IMX253 sensor:
Very best,
Search found 1861 matches
- Tue Apr 16, 2024 9:49 pm
- Forum: This is SolarChat !!
- Topic: Major Active Regions [High Res], Discs | HA, CaK, Cont | April 16th 2024
- Replies: 9
- Views: 215
- Tue Apr 16, 2024 7:23 pm
- Forum: This is SolarChat !!
- Topic: Major Active Regions [High Res], Discs | HA, CaK, Cont | April 16th 2024
- Replies: 9
- Views: 215
Major Active Regions [High Res], Discs | HA, CaK, Cont | April 16th 2024
Hi all, Had some decent conditions this morning and was able to get some data on the major active regions and some full discs in CaK, HA & Continuum in fairly good seeing conditions. AR3634 has an interesting light bridge that spans straight across its longest axis. B&W: https://live.staticf...
- Mon Apr 08, 2024 11:08 pm
- Forum: Total Solar Eclipse April 8 2024
- Topic: Eclipse Party from Florida (Partial) | April 8th 2024
- Replies: 8
- Views: 164
Eclipse Party from Florida (Partial) | April 8th 2024
Hi all, Partial solar eclipse party from Florida! Hope you all had a great time and got to see something. Keep looking up! https://live.staticflickr.com/65535/53641432969_d2bdcff21e_b.jpg https://live.staticflickr.com/65535/53641093641_1f1477b37f_b.jpg https://live.staticflickr.com/65535/53641093541...
- Sun Mar 24, 2024 12:17 am
- Forum: This is SolarChat !!
- Topic: AR3615 Big Solar Flares! Full Disc & High Res H-alpha | March 23rd 2024
- Replies: 18
- Views: 489
Re: AR3615 Big Solar Flares! Full Disc & High Res H-alpha | March 23rd 2024
thank you! 3615 is beautiful - so many cores. Can you tell more about the "post CME loops" ? This is interesting. It's not the same as post flare loops? Steen Not all solar flares result in a CME (coronal mass ejection). Some flares just pop and that's it. When it's a flare and CME and ma...
- Sat Mar 23, 2024 6:21 pm
- Forum: This is SolarChat !!
- Topic: AR3615 Big Solar Flares! Full Disc & High Res H-alpha | March 23rd 2024
- Replies: 18
- Views: 489
AR3615 Big Solar Flares! Full Disc & High Res H-alpha | March 23rd 2024
Hey all, AR3615 threw a nice X class flare last night! The two major AR's facing us popped off together actually which is amazing and it's sending a bunch of energy our way, so maybe we'll see some incredible show tomorrow if you're near somewhere that can see aurora and maybe some spotty radio in s...
- Thu Mar 21, 2024 1:46 pm
- Forum: This is SolarChat !!
- Topic: Solar Disc Trifecta (Continuum, CaK, H-alpha) with Huge Floating Prom | March 19th 2024
- Replies: 14
- Views: 381
Re: Solar Disc Trifecta (Continuum, CaK, H-alpha) with Huge Floating Prom | March 19th 2024
may I ask which camera did you use with the ls60 for full disk? An older IMX253 sensor was used for all the images above (1.1", 3.45um pixels). https://www.flir.com/products/grasshopper3-usb3/?model=GS3-U3-123S6M-C&vertical=machine+vision&segment=iis Found them on ebay used for $250 (t...
- Wed Mar 20, 2024 2:16 am
- Forum: This is SolarChat !!
- Topic: Solar Disc Trifecta (Continuum, CaK, H-alpha) with Huge Floating Prom | March 19th 2024
- Replies: 14
- Views: 381
Re: Solar Disc Trifecta (Continuum, CaK, H-alpha) with Huge Floating Prom | March 19th 2024
What make and aperture is the smallest of the three scopes you used. What wavelength was you using it to image? Hi James, The imaging platform is listed above with the image of the scopes. This is what's on there: 150mm F8 doublet (used for all wavelengths, primary high res scope, not used for thes...
- Tue Mar 19, 2024 8:03 pm
- Forum: This is SolarChat !!
- Topic: Solar Disc Trifecta (Continuum, CaK, H-alpha) with Huge Floating Prom | March 19th 2024
- Replies: 14
- Views: 381
Solar Disc Trifecta (Continuum, CaK, H-alpha) with Huge Floating Prom | March 19th 2024
Heya, I had a little clear patch this morning after all the rain, just wanted to do some quick looks and there was a really fantastic floating prom that quickly lifted off, and is gone now. I couldn't do any moderate or high res work, it was later in the morning for my norm and seeing was dreadful b...
- Mon Mar 11, 2024 12:19 am
- Forum: This is SolarChat !!
- Topic: AR3590 Trifecta (Continuum, CaK & H-alpha) in High Res | Feb 26th 2024
- Replies: 21
- Views: 731
Re: AR3590 Trifecta (Continuum, CaK & H-alpha) in High Res | Feb 26th 2024
Do you have an idea Marty with these Lunt_60_50 DoubleStack upgrade how many Angstroms you have as end result? Probably around 0.5~0.6A, but this FWHM rating is not important. The actual transmission profile is far more important and that's to have the wings around the central wavelength peak suppr...
- Fri Mar 08, 2024 3:01 pm
- Forum: This is SolarChat !!
- Topic: AR3590 Trifecta (Continuum, CaK & H-alpha) in High Res | Feb 26th 2024
- Replies: 21
- Views: 731
Re: AR3590 Trifecta (Continuum, CaK & H-alpha) in High Res | Feb 26th 2024
I see that you are using a motorized focuser on the front. (1) Do you use the first focuser to focus the image? i thought the first focuser is used to get the backfocus correct for the LS60 collimation lens. I did not change the filter in front of the LS60 from the red glas thats in there by defaul...
- Wed Feb 28, 2024 1:01 pm
- Forum: Solar Scope Modifications
- Topic: Doublestack for mod
- Replies: 60
- Views: 13171
Re: Doublestack for mod
Hi, Well, the fact that you have an obvious jacquinot spot makes it apparent that whatever measurement you used for collimating lens placement for both etalons is simply not positioned correctly. I'm not sure which etalons you're using, but many of the internal ones have a collimating lens set befor...
- Tue Feb 27, 2024 10:48 pm
- Forum: Solar Scope Modifications
- Topic: Doublestack for mod
- Replies: 60
- Views: 13171
Re: Doublestack for mod
Hi Oleg, What is the base scope you're using (aperture, length, etc)? Are you using collimating lenses internally or a telecentric? The jacquinot spot will shrink as bandpass becomes more isolated in a collimated system. If they were front mounted, it wouldn't be noticed. If they were behind a true ...
- Tue Feb 27, 2024 12:56 pm
- Forum: This is SolarChat !!
- Topic: AR3590 Trifecta (Continuum, CaK & H-alpha) in High Res | Feb 26th 2024
- Replies: 21
- Views: 731
Re: AR3590 Trifecta (Continuum, CaK & H-alpha) in High Res | Feb 26th 2024
Greate images Marty. :) My i ask what the second Lunt etalon is and if you had to modify the LS60 etalon for the double stack? Hi, The second etalon is a Lunt LS50FHa module (M90x1 threading on both sides, tilt tune is internal mechanism, so no mounting hardware needed), it double stacks on the fro...
- Tue Feb 27, 2024 12:40 pm
- Forum: This is SolarChat !!
- Topic: AR3590 Trifecta (Continuum, CaK & H-alpha) in High Res | Feb 26th 2024
- Replies: 21
- Views: 731
Re: AR3590 Trifecta (Continuum, CaK & H-alpha) in High Res | Feb 26th 2024
Greate images Marty. :) My i ask what the second Lunt etalon is and if you had to modify the LS60 etalon for the double stack? Hi, The second etalon is a Lunt LS50FHa module (M90x1 threading on both sides, tilt tune is internal mechanism, so no mounting hardware needed), it double stacks on the fro...
- Tue Feb 27, 2024 12:45 am
- Forum: This is SolarChat !!
- Topic: AR3590 Trifecta (Continuum, CaK & H-alpha) in High Res | Feb 26th 2024
- Replies: 21
- Views: 731
AR3590 Trifecta (Continuum, CaK & H-alpha) in High Res | Feb 26th 2024
Hi all, It has been a hot minute since I've had some sky time. The weather here in Florida has been dreadful for months. Just ridiculous. Lots of storms, rain, clouds, crazy wind, etc. Lots of doom-gloom! Anyhow, today was a nice break with clear skies all day, despite it being really cold (for Flor...
- Thu Aug 03, 2023 12:33 pm
- Forum: This is SolarChat !!
- Topic: How well does Lunt 60 modular telescope perform as nighttime scope?
- Replies: 7
- Views: 467
Re: How well does Lunt 60 modular telescope perform as nighttime scope?
In their Universal Modular line they have 100mm and 130mm as well. Would they be more than adequate for night ? There are only a few YouTube reviews about them and doesn't say much on their night capabilities Their larger refractors are good scopes and the larger apertures are more ideal for night ...
- Wed Aug 02, 2023 9:47 pm
- Forum: This is SolarChat !!
- Topic: How well does Lunt 60 modular telescope perform as nighttime scope?
- Replies: 7
- Views: 467
Re: How well does Lunt 60 modular telescope perform as nighttime scope?
Hi, The Lunt 60 modular/universal is a 70mm F6 ED doublet, the internal etalon masks it to 60mm F7 when the etalon is intalled; the same objective found in the common 70mm F6 ED doublets out there right now in the $300 range. It has a good 2 inch crayford focuser. It's a good visual scope in general...
- Wed Aug 02, 2023 8:23 pm
- Forum: This is SolarChat !!
- Topic: Solar Disc Trifecta & High Res AR's | Cont, CaK, H-Alpha | Aug 2nd 2023
- Replies: 8
- Views: 501
Solar Disc Trifecta & High Res AR's | Cont, CaK, H-Alpha | Aug 2nd 2023
Hi all, I got a small window late morning today and had to wait out band after band of clouds but managed to get some data between things in sucker holes. Seeing was poor unfortunately, but peaks were sometimes getting to sub-arc-second level. I did a little H-alpha in moderate to high res, but seei...
- Wed Apr 05, 2023 2:07 am
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: Collimating a long image train
- Replies: 8
- Views: 1785
Re: Collimating a long image train
Hi, A tilt adapter will help. Your system doesn't have to be perfectly collimated, which is really hard without a dovetail that spans the scope and its imaging train to anchor to. That would be ideal. I have no problems with things not being orthogonal and I don't need a tilt adapter with a cheap li...
- Wed Mar 29, 2023 11:27 pm
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: Full aperture D-ERF vs sub-aperture D-ERF for TS 152mm f/5.9
- Replies: 16
- Views: 2378
Re: Full aperture D-ERF vs sub-aperture D-ERF for TS 152mm f/5.9
Hi, Realistically all that is needed for virtually any aperture that is portable is an optically flat film or optically flat glass that is IR reflective and then use an internal sub-aperture selective filter (such as a red or h-alpha centered imaging class 2" filter). The bulk of the thermal is...
- Wed Mar 29, 2023 12:41 pm
- Forum: Solar Scope Modifications
- Topic: Any feed-back on remote control for tilt-tuned filters ?
- Replies: 24
- Views: 3318
Re: Any feed-back on remote control for tilt-tuned filters ?
Hi Christian, I don't have one working at the moment, but essentially if you just match a plastic gear wheel to the tilt wheel you can do this with a basic DC step motor that has 1 step intervals or larger. I use Rigel systems nFocus step motors for these things, especially for focusers because it h...
- Wed Mar 29, 2023 12:38 pm
- Forum: Solar Scope Modifications
- Topic: Etalon problems
- Replies: 7
- Views: 1588
Re: Etalon problems
Hi,
I would consider the Lunt 40 etalons. They're inexpensive and tilt tuned. RAFCamera already has plans for a chamber to be machined to hold it. You just put it behind a telecentric like Baader TZ4 and you are back in business. Plus you can get a 2nd one and double stack.
Very best,
I would consider the Lunt 40 etalons. They're inexpensive and tilt tuned. RAFCamera already has plans for a chamber to be machined to hold it. You just put it behind a telecentric like Baader TZ4 and you are back in business. Plus you can get a 2nd one and double stack.
Very best,
- Sun Mar 26, 2023 7:29 pm
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: Full aperture D-ERF vs sub-aperture D-ERF for TS 152mm f/5.9
- Replies: 16
- Views: 2378
Re: Full aperture D-ERF vs sub-aperture D-ERF for TS 152mm f/5.9
Hi, If you plan on using the whole 150mm aperture, go full aperture. Especially with short focal length. The disc image is tiny with that focal length and so all the energy of the 150mm is concentrated into a smaller area, it will be very hot in that tiny area, so a sub-aperture D-ERF is less effect...
- Sat Mar 25, 2023 9:53 pm
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: 500fps kinetix cmos camera!
- Replies: 10
- Views: 1869
Re: 500fps kinetix cmos camera!
As Christian pointed out, its not good for our purpose with imaging due to its full well capacity. Also, USB3.2 is not a good step for cameras. It too is limited and requires the motherboard support it on the PC in use. This could easily require you to buy a new PC just due to that and it too is sti...
- Sat Mar 25, 2023 8:30 pm
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: Solarmax II back on sale
- Replies: 2
- Views: 1118
Re: Solarmax II back on sale
Orion sent out an email, its limited stock, selling warehouse inventory they probably just finally cateloged after acquisition of Meade. They're not being produced I don't think. Sadly, they're more expensive than they were before SMIII was released. Before SMIII everyone was dumping SMII series at ...
- Sat Mar 25, 2023 12:15 pm
- Forum: This is SolarChat !!
- Topic: AR3256 & Friends | Cont, CaK, Ha | March 24th 2023
- Replies: 15
- Views: 581
Re: AR3256 & Friends | Cont, CaK, Ha | March 24th 2023
Thanks all, :bow What equipment did you use? I am interested in particular for hydrogen alpha images: you got a flat in band field with also prominence included. No double rim in the border of the Sun and great uniformity. Hi, I use the following: Celestron 150mm F8 achromatic doublet Aries tri-band...
- Fri Mar 24, 2023 9:22 pm
- Forum: This is SolarChat !!
- Topic: AR3256 & Friends | Cont, CaK, Ha | March 24th 2023
- Replies: 15
- Views: 581
AR3256 & Friends | Cont, CaK, Ha | March 24th 2023
Hi all, Clear skies this morning with a deep blue, wonderful transparency and some sub-arc-second seeing to go with it (around 0.8~1 arc-second peaks this morning). Visual was wonderful, the complex active region group of AR3256, 3257 & 3259 make a lovely area rich in faculae, filaments, fibrils...
- Fri Mar 10, 2023 1:59 am
- Forum: This is SolarChat !!
- Topic: Massive Prominence & AR's High Res | HA | March 9th 2023
- Replies: 13
- Views: 600
Massive Prominence & AR's High Res | HA | March 9th 2023
Hi all, I was able to get some morning sun before the clouds rolled in and seeing was decent. Visually the great quiescent prominence was quite the stunner, protruding over 100,000km from the surface and it's hung on for half a day or more now, but won't last much longer, I expect it will lift off t...
- Fri Feb 03, 2023 2:55 pm
- Forum: Solar Scope Modifications
- Topic: Matching f10 optics to an F7 Lunt 60 modular PT etalon
- Replies: 6
- Views: 2067
Re: Matching f10 optics to an F7 Lunt 60 modular PT etalon
Thank you Bob and Marty. :bow It seems I have been worrying needlessly about the f-ratio requirement of the Lunt 60 PS etalon. I have tried moving the etalon away from the optimum 264mm position without any visible gain in image quality. As to a 1200mm lens there are lots of 150mm f/8 achromats abo...
- Fri Feb 03, 2023 2:43 pm
- Forum: This is SolarChat !!
- Topic: Effect of blocking filter position on bandwidth.
- Replies: 22
- Views: 733
Re: Effect of blocking filter position on bandwidth.
If you have a BF of sufficient aperture, try putting it behind the TZ4 or behind etalon2 and you might be as pleasantly surprised as I was. In general you will get better performance with long focal-ratio (or just think of it more as near parallel light rays) through any filter. With 2 etalons this...
- Fri Feb 03, 2023 1:23 pm
- Forum: Solar Scope Modifications
- Topic: Matching f10 optics to an F7 Lunt 60 modular PT etalon
- Replies: 6
- Views: 2067
Re: Matching f10 optics to an F7 Lunt 60 modular PT etalon
Hi, What are you trying to accomplish? I'm confused by the focal reducer bit as its not needed. You don't need F10, F7, etc. The focal-ratio largely doesn't matter. The collimator lenses just need to be sitting at a specific amount of back focus from the plane of focus and it scales with that value ...
- Fri Feb 03, 2023 1:05 pm
- Forum: This is SolarChat !!
- Topic: Effect of blocking filter position on bandwidth.
- Replies: 22
- Views: 733
Re: Effect of blocking filter position on bandwidth.
Hi, I run my blocking filter in between my two air spaced etalons in this configuration: collimation lens -> etalon 1 -> collimation lens -> Blocking Filter -> TZ4 Telecentric -> etalon 2 -> Eyepiece/camera In a double stack, you can run the BF anywhere after the first etalon. The diameter matters b...
- Mon Jan 30, 2023 6:16 pm
- Forum: Solar Scope Modifications
- Topic: Etalon PST problem - NEWS
- Replies: 51
- Views: 6815
Re: Etalon PST problem
I've seen many of these degrade over time. They're just there to hold the etalon plates "somewhere" in the chamber. The edges keep it rough collimated. The pressure on the plates tunes them. The sponges are just there to take mechanical stress from the compressing. You can replace that ma...
- Mon Jan 30, 2023 12:47 pm
- Forum: Solar Scope Modifications
- Topic: Etalon PST problem - NEWS
- Replies: 51
- Views: 6815
Re: Etalon PST problem
I've seen many of these degrade over time. They're just there to hold the etalon plates "somewhere" in the chamber. The edges keep it rough collimated. The pressure on the plates tunes them. The sponges are just there to take mechanical stress from the compressing. You can replace that mat...
- Mon Jan 30, 2023 12:44 pm
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: Maier ITF replacement
- Replies: 4
- Views: 1207
Re: Maier ITF replacement
Replacing a rusted PST ITF with a Maier ITF, where does the rubber O ring go? The old one didn't have one. I installed in this order, ITF, O ring and threaded retaining ring. Is it supplied to stop one over tightening the retaining ring? Ivan The gasket is to avoid tightening the filter to avoid st...
- Thu Jan 26, 2023 12:57 pm
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: SolarScope etalon
- Replies: 6
- Views: 1723
Re: SolarScope etalon
I think with the release and price of the Lunt 40, it is likely the best etalon for custom jobs, both primary or double stacking. No crazy work to harvest it. Simple known threads to adapt it. Easy to just put it behind a true telecentric amp and you're in business. And if Lunt releases it as a doub...
- Wed Jan 18, 2023 10:03 pm
- Forum: This is SolarChat !!
- Topic: The Great Spot of AR3190 in High Res | Jan 18th 2023
- Replies: 8
- Views: 437
The Great Spot of AR3190 in High Res | Jan 18th 2023
Hi all, My morning was clouds and overcast haze, but it really warmed up today and sometimes my seeing is pretty fair following passing clouds and haze when the temperature is not frigid (Florida cold, hah). It was pretty turbulent mid-afternoon around 1200 Eastern time, an atypical time for me to e...
- Mon Jan 16, 2023 2:51 pm
- Forum: This is SolarChat !!
- Topic: AR's 3190, 3191, 3192 In High Res | Cont, CaK, Ha | Jan 15th 2023
- Replies: 17
- Views: 507
Re: AR's 3190, 3191, 3192 In High Res | Cont, CaK, Ha | Jan 15th 2023
Thanks all, :bow It's actually annually that we get a few hard freezes. Florida gets cold in half the state every year from winds that come down the apalachians. South Florida is basically another country and so people think of Key West and Miami when they think of Florida usually and its pretty war...
- Mon Jan 16, 2023 1:56 pm
- Forum: Solar Scope Modifications
- Topic: Current options for a C6-R focuser upgrade?
- Replies: 13
- Views: 2595
Re: Current options for a C6-R focuser upgrade?
Hi, Depending on what filter system you get into, a strong good focuser is pretty important, however I didn't see any mention of mechanizing the focuser and I will stress that this is crucial for a high res setup. While manual focus can be done, heck I do it all the time, but I wouldn't suggest it t...
- Sun Jan 15, 2023 5:35 pm
- Forum: This is SolarChat !!
- Topic: AR's 3190, 3191, 3192 In High Res | Cont, CaK, Ha | Jan 15th 2023
- Replies: 17
- Views: 507
AR's 3190, 3191, 3192 In High Res | Cont, CaK, Ha | Jan 15th 2023
Hi all, I woke up to a freeze this morning, ice in all the water bowls, all my yard frosted with ice, quite cold for Florida! The seeing is generally poor when my ambient temps get low as the rapid heating and evaporating of the ice causes huge issues with local seeing. I warmed everything up with a...
- Fri Jan 13, 2023 12:35 pm
- Forum: This is SolarChat !!
- Topic: High Res AR's 3181, 3182, 3184, 3186, Filaprom | HA & Continuum | Jan 11th 2023
- Replies: 15
- Views: 559
Re: High Res AR's 3181, 3182, 3184, 3186, Filaprom | HA & Continuum | Jan 11th 2023
Thanks all, :bow What time was this taken? Is a " Briar Pipe " a brand or type of tobacco pipe? Between 0930 and 1030 eastern time for the session, it was towards the end of the session so probably in that 1000~1030 eastern time range. Briar is just the wood, it's a wood briar pipe. I put ...
- Wed Jan 11, 2023 8:18 pm
- Forum: This is SolarChat !!
- Topic: High Res AR's 3181, 3182, 3184, 3186, Filaprom | HA & Continuum | Jan 11th 2023
- Replies: 15
- Views: 559
High Res AR's 3181, 3182, 3184, 3186, Filaprom | HA & Continuum | Jan 11th 2023
Hi all, Had some splendid chilly weather this morning here in Florida. Seeing was highly variable, chaotic even, but allowed good resolution in sub-arc-second seeing conditions via lucky imaging. Three x-flares this week! I saw some significant activity this morning, AR3181 flared while I was watchi...
- Mon Jan 09, 2023 1:31 pm
- Forum: This is SolarChat !!
- Topic: AR's 3182 & 3181 High Res, Discs | Ha, CaK, Cont | Jan 8th 2023
- Replies: 14
- Views: 516
Re: AR's 3182 & 3181 High Res, Discs | Ha, CaK, Cont | Jan 8th 2023
Thanks all,
Hopefully we get some more X flares from one of these!
Very best,
Hopefully we get some more X flares from one of these!
Very best,
- Mon Jan 09, 2023 1:30 am
- Forum: This is SolarChat !!
- Topic: AR's 3182 & 3181 High Res, Discs | Ha, CaK, Cont | Jan 8th 2023
- Replies: 14
- Views: 516
AR's 3182 & 3181 High Res, Discs | Ha, CaK, Cont | Jan 8th 2023
Hi all, Hope everyone has passed the holidays well. Weather has been dreadful for me plus other random things just taking time. I haven't imaged in ages, but I have done visual when I could. Sad to have missed that X class flare yesterday followed by post CME loops at the limb for a half hour. Still...
- Mon Nov 28, 2022 1:04 am
- Forum: This is SolarChat !!
- Topic: From Valery. Kherson liberation.
- Replies: 24
- Views: 934
Re: From Valery. Kherson liberation.
Great to see you and your family finally somewhere safe and that you are all well. Excellent news!
Very best,
Very best,
- Tue Oct 04, 2022 12:13 pm
- Forum: Solar Scope Modifications
- Topic: Active coolers for sun cameras Apollo and Saturn
- Replies: 12
- Views: 2232
- Tue Oct 04, 2022 2:42 am
- Forum: This is SolarChat !!
- Topic: AR3112 Monster Active Region | Cont & HA | Oct 3rd 2022
- Replies: 8
- Views: 415
Re: AR3112 Monster Active Region | Cont & HA | Oct 3rd 2022
Always interesting and informative to see the accompanying SSM chart. It's interesting, but it greatly depends on what context is involved. These metrics are not completely accurate, but they're highly correlated with actual good seeing. That said, again context matters a ton. If you look at the gr...
- Mon Oct 03, 2022 8:20 pm
- Forum: Solar Scope Modifications
- Topic: Active coolers for sun cameras Apollo and Saturn
- Replies: 12
- Views: 2232
Re: Active coolers for sun cameras Apollo and Saturn
Hi,
Do you have short exposure data to compare the noise character when on/off?
Very best,
Do you have short exposure data to compare the noise character when on/off?
Very best,
- Mon Oct 03, 2022 7:12 pm
- Forum: This is SolarChat !!
- Topic: AR3112 Monster Active Region | Cont & HA | Oct 3rd 2022
- Replies: 8
- Views: 415
AR3112 Monster Active Region | Cont & HA | Oct 3rd 2022
Heya, Despite the nasty weather we have had in Florida lately, today was a clear day post-storm but my seeing conditions were not great. The weather is suddenly chilly (30 degrees less than normal!) post hurricane Ian. So now it's in the 60's F and sunny and clear, a total turn of weather compared t...
- Mon Sep 12, 2022 2:39 pm
- Forum: Solar Scope Modifications
- Topic: Designing a new etalon for halpha
- Replies: 22
- Views: 4949
Re: Designing a new etalon for halpha
I love Marty's idea of stacking filters. But they will be tilt-tuned, or am I getting it wrong? Yes, they could be tilt tuned, unless you design them to work in a pressurized cell, both are feasible. Outside of the challenges of production, which is totally possible, it's more also working out refl...