Search found 72 matches

by TheSkyBurner
Wed May 23, 2018 12:13 am
Forum: This is SolarChat !!
Topic: Replacing the Rusted BF30 Filter
Replies: 43
Views: 566

Re: Replacing the Rusted BF30 Filter

How long have you had your bf30, and are you the original owner? Getting rust on a bf30 from such a small etalon/ objective with its ERF still in place is quite worry some! If you had the thing less than 3 years I would say there is something seriously up with the danger zone coming out of the back ...
by TheSkyBurner
Wed May 23, 2018 12:02 am
Forum: This is SolarChat !!
Topic: Thermal Acclimation of My Lunt50
Replies: 28
Views: 588

Re: Thermal Acclimation of My Lunt50

the etalon of the pressure tuner rests inside of a metal pressure cylinder. If you are feeling rather comfortable about removing the etalon from the optical compartment, you can shake it to see if it is indeed loose inside of that cylinder. The optical chamber is separated from the etalon chamber , ...
by TheSkyBurner
Tue May 22, 2018 7:53 pm
Forum: This is SolarChat !!
Topic: Replacing the Rusted BF30 Filter
Replies: 43
Views: 566

Re: Replacing the Rusted BF30 Filter

Most people neglect to realize that the PST has something similar to a herschel prism in it which substantially reduces the IR and UV light before the eyepiece.
by TheSkyBurner
Tue May 22, 2018 7:52 pm
Forum: This is SolarChat !!
Topic: Replacing the Rusted BF30 Filter
Replies: 43
Views: 566

Re: Replacing the Rusted BF30 Filter

There is reason for uncertainty because the lack of understanding that the filters act in a "train". The erf sets the initial optical density to level 2 for both IR and UV., the coating On the first collimating lens sets the optical density for UV to level 3. The first coating on the first etalon pl...
by TheSkyBurner
Sat May 19, 2018 6:55 pm
Forum: This is SolarChat !!
Topic: Takahashi EM400 in | EM200 out
Replies: 8
Views: 136

Re: Takahashi EM400 in | EM200 out

The only thing left is to setup worldwide remote observation and “rent” out your virtual observatory to a major university :)
by TheSkyBurner
Sat May 19, 2018 1:52 am
Forum: This is SolarChat !!
Topic: Replacing the Rusted BF30 Filter
Replies: 43
Views: 566

Re: Replacing the Rusted BF30 Filter

KG3 glass absorbes moisture over time and suffers from environmental damage over time as well, so it is also not a long term solution unfortunately. It is also only od2 blocking I believe and this is why the blocking filter has multiple elements and must work in junction to the ERF filter.. The only...
by TheSkyBurner
Fri May 18, 2018 11:11 pm
Forum: This is SolarChat !!
Topic: Sun in Halfa/Cak/White light with solar refractor 228
Replies: 18
Views: 528

Re: Sun in Halfa/Cak/White light with solar refractor 228

What is the base focal length of your objective with no lenses or other optics in the focuser?
by TheSkyBurner
Fri May 18, 2018 9:34 pm
Forum: Solar Scope Modifications
Topic: PST CaK mod
Replies: 19
Views: 563

Re: PST CaK mod

The only PST filter used is the "blue coated on yellow glass." Whether you call this the No. 1 or No. 2 filter is problematic, but inconsequential. Bob, did your PST not have a filter before the blue filter? I consider the "rusted primary" filter to be filter 1, and the filter behind this to be fil...
by TheSkyBurner
Fri May 18, 2018 9:08 pm
Forum: This is SolarChat !!
Topic: First trial - T250 + CaK
Replies: 8
Views: 197

Re: First trial - T250 + CaK

what company applied the mirror coating?
by TheSkyBurner
Fri May 18, 2018 12:56 pm
Forum: This is SolarChat !!
Topic: It is all in the detail.
Replies: 39
Views: 556

Re: It is all in the detail.

i read on stargazers lounge there was another user experiencing the "interlace affect" with an asi120. it was caused by the shutter speed, try cranking it up or slowing it down. i beleive the user said his was at .05 and this was the cause of his lines. ill try to find the link again, it was associa...
by TheSkyBurner
Fri May 18, 2018 2:46 am
Forum: Solar Scope Modifications
Topic: PST CaK mod
Replies: 19
Views: 563

Re: PST CaK mod

ill put together a parts list with links to rebuild the whole thing, just need a couple days to research more options.
by TheSkyBurner
Fri May 18, 2018 12:37 am
Forum: Solar Scope Modifications
Topic: PST CaK mod
Replies: 19
Views: 563

Re: PST CaK mod

I would bin them and replace the whole eyepiece holder section with a 1.25" filter holder relying on a edmund optics 394nm hard coated filter. if you wish to replace the rusted filter, find the meier optical 393nm bandpass filter , http://maierphotonics.com/bandpass-filter.aspx Item Number: 393BW10/...
by TheSkyBurner
Thu May 17, 2018 3:39 pm
Forum: This is SolarChat !!
Topic: It is all in the detail.
Replies: 39
Views: 556

Re: It is all in the detail.

and lastly, even an interlaced cmos/ccd chip certainly still shows details.Image
by TheSkyBurner
Thu May 17, 2018 3:29 pm
Forum: This is SolarChat !!
Topic: It is all in the detail.
Replies: 39
Views: 556

Re: It is all in the detail.

images with newton rings still show details. http://2.bp.blogspot.com/-rV8Jb4UzBvc/VHH4bgGxGqI/AAAAAAAAMT4/NNPoZnUTAgM/s1600/20141122-1159-5x.jpg https://stargazerslounge.com/uploads/monthly_2016_07/SunHalpha_164442A.thumb.jpg.6bb66303e17728bab3faaed35f806e65.jpg even a poorly illuminated banding wi...
by TheSkyBurner
Thu May 17, 2018 3:26 pm
Forum: This is SolarChat !!
Topic: It is all in the detail.
Replies: 39
Views: 556

Re: It is all in the detail.

i am in agreement with mark here. The asi120mm camera is very common and regardless of the newton rings the picture is in focus and there should be detail on the solar disc, which is totally void of. Even with a blank solar disc with no sunspots, he should be seeing some bit of "fur". The problem is...
by TheSkyBurner
Wed May 16, 2018 6:19 pm
Forum: This is SolarChat !!
Topic: It is all in the detail.
Replies: 39
Views: 556

Re: It is all in the detail.

Denababy: I think you have to "climatize" your pressure tuner. You do this by unscrewing the brass tuning knob completely off. Then you simply put it back on, and thread it in till about the half way/70% inward location. If you still see no details I would hate to say that you might have a damaged t...
by TheSkyBurner
Wed May 16, 2018 8:56 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Omega Optical CaH filter
Replies: 16
Views: 350

Re: Omega Optical CaH filter

I have one of those, it is optically clear but I didn't see much difference with it. I don't use it anymore. https://www.flickr.com/photos/alexandra4/albums/72157650715279858 I must admit I tried it with the SCT and the Baader solar film and I couldn't see anything at all, does Baader film cut belo...
by TheSkyBurner
Tue May 15, 2018 5:28 pm
Forum: This is SolarChat !!
Topic: 13th of May 2018, 150mm Ha in High Res, AR2709 & Proms!
Replies: 20
Views: 308

Re: 13th of May 2018, 150mm Ha in High Res, AR2709 & Proms!

Your combination works very well, gret job!
by TheSkyBurner
Tue May 15, 2018 12:44 pm
Forum: This is SolarChat !!
Topic: 13th of May 2018, 150mm Ha in High Res, AR2709 & Proms!
Replies: 20
Views: 308

Re: 13th of May 2018, 150mm Ha in High Res, AR2709 & Proms!

is this a modified telescope setup, or just haave double stacked front etalon with aperture at 80mm?
by TheSkyBurner
Sun May 13, 2018 9:53 pm
Forum: Solar Scope Modifications
Topic: Light absorbing panels
Replies: 0
Views: 70

Light absorbing panels

Absorbe 99.99%, that seems like it would be good for a telescope part. For gratings and reflection control
Super expensive! But cool
https://www.edmundoptics.com/lab-produc ... nt-panels/
by TheSkyBurner
Sun May 13, 2018 3:30 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Omega Optical CaH filter
Replies: 16
Views: 350

Re: Omega Optical CaH filter

Ill stop there, but if you want to see more of his "new filters" i will gladly post about 32 more photos because thats how many paper weights i have sitting here in a desk drawer. However it is understandable to have faulty deliveries. There are people still getting faulty coronados , faulty quarks,...
by TheSkyBurner
Sun May 13, 2018 3:18 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Omega Optical CaH filter
Replies: 16
Views: 350

Re: Omega Optical CaH filter

This one i cant even begin to explain. The side of the filter is marked 540nm, but it transmits nothing but red. So much for that continuum filter i ordered..
540nm.gif
540nm.gif (447.8 KiB) Viewed 292 times
by TheSkyBurner
Sun May 13, 2018 3:06 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Omega Optical CaH filter
Replies: 16
Views: 350

Re: Omega Optical CaH filter

again. every filter i have gotten has some sort of damage. So when ordering from ebay bjomejag and not directly from the manufacturer its like playing the lotto.
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thumbnail_IMG_4293.jpg
thumbnail_IMG_4293.jpg (129.22 KiB) Viewed 294 times
by TheSkyBurner
Sun May 13, 2018 3:06 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Omega Optical CaH filter
Replies: 16
Views: 350

Re: Omega Optical CaH filter

Clear visible damage to a "new filter", which is reminiscent of PST ITF rust. Mold, mottling, degradation whatever you want to call it. This is what he mails people sometimes.

You MAY get a good one, but the story is more often bad than good for most people.
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