Today's Filament & Plage, Full Disc | HA | Feb 21 2019
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Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Heya,
Woke up to a fairly clear sky with some scattered clouds and some mediocre seeing. The large filament persists and the plage area is bright still. No large prominences and no sunspots currently. First light with a new setup that I've been building. This one centers around a C8 Edge HD SCT telescope with a full aperture Aires tri-band D-ERF for high resolution feature imaging and a masked ST80 for full disc imaging with my Quark Chromosphere and ASI174MM camera with various combinations of focal reducers. Still trying to sort everything out, it's definitely different imaging with it, but managed to get a "first light" with the system to at least show it's functioning.
B&W:
Color:
Earth Scale:
Equipment:
C8 Edge HD SCT equipped with Aires 8" Tri-band D-ERF
Daystar Quark Chromosphere
ST80 (masked to 60mm)
ASI174MM + 0.5x Focal Reducer
Very best,
Woke up to a fairly clear sky with some scattered clouds and some mediocre seeing. The large filament persists and the plage area is bright still. No large prominences and no sunspots currently. First light with a new setup that I've been building. This one centers around a C8 Edge HD SCT telescope with a full aperture Aires tri-band D-ERF for high resolution feature imaging and a masked ST80 for full disc imaging with my Quark Chromosphere and ASI174MM camera with various combinations of focal reducers. Still trying to sort everything out, it's definitely different imaging with it, but managed to get a "first light" with the system to at least show it's functioning.
B&W:
Color:
Earth Scale:
Equipment:
C8 Edge HD SCT equipped with Aires 8" Tri-band D-ERF
Daystar Quark Chromosphere
ST80 (masked to 60mm)
ASI174MM + 0.5x Focal Reducer
Very best,
Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Hey Marty,
Wow! Nice setup. I've been waiting to see it come together. That's a great D-ERF and mounting cell. First light look pretty good and I can't wait to see more from that scope.
Congrats
Phil
Wow! Nice setup. I've been waiting to see it come together. That's a great D-ERF and mounting cell. First light look pretty good and I can't wait to see more from that scope.
Congrats
Phil
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Very nice new equipment Marty, wish you a lot of happy moments and beautiful images ...
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Very nice, Marty.
It’s always so satisfying to get a good first light to prove out the setup.
Stu.
It’s always so satisfying to get a good first light to prove out the setup.
Stu.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Looks good Marty!
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Thanks all,
I still have to figure out this imaging train, it's sub-optimal right now. Transmission is good. I easily do 5ms with zero gain with just the D-ERF and Quark with a 70% histogram still, which is good, with a 0.5x focal reducer. Without the focal reducer, imaging at F42~44 is too large of an imaging scale for my IMX174 pixel size. So F21~F22 with the focal reducer should be near optimal for the IMX174 pixel size. The problem is getting that F21 without big vignetting. In my previous setup, I could do this without much vignetting. But in this setup, placement of the focal reducer results in vignetting that is severe. I have to play around with distance of the focal reducer to the sensor to get it right. I don't mind a little vignetting, but heavy vignetting hurts the FOV when its this narrow, big time.
I will eventually add the 0.7x focal reducer for the Edge series, for night time use. But I may toy around with it for solar too, to widen the FOV on really large subjects (like this filament is so big I cannot frame it up without heavily reducing the EFL without doing a mosaic).
Right now the issue is that the focal reducer is too close to the sensor, I get no vignetting, but the image scale is too large still (it's not 0.5x). But when it's farther from the sensor, the vignetting is quite strong. But, I likely have it too far from the sensor (I think my spacer is 1.5" so 75mm or so?). I'm thinking of getting a 25mm spacer to test out.
Very best,
I still have to figure out this imaging train, it's sub-optimal right now. Transmission is good. I easily do 5ms with zero gain with just the D-ERF and Quark with a 70% histogram still, which is good, with a 0.5x focal reducer. Without the focal reducer, imaging at F42~44 is too large of an imaging scale for my IMX174 pixel size. So F21~F22 with the focal reducer should be near optimal for the IMX174 pixel size. The problem is getting that F21 without big vignetting. In my previous setup, I could do this without much vignetting. But in this setup, placement of the focal reducer results in vignetting that is severe. I have to play around with distance of the focal reducer to the sensor to get it right. I don't mind a little vignetting, but heavy vignetting hurts the FOV when its this narrow, big time.
I will eventually add the 0.7x focal reducer for the Edge series, for night time use. But I may toy around with it for solar too, to widen the FOV on really large subjects (like this filament is so big I cannot frame it up without heavily reducing the EFL without doing a mosaic).
Right now the issue is that the focal reducer is too close to the sensor, I get no vignetting, but the image scale is too large still (it's not 0.5x). But when it's farther from the sensor, the vignetting is quite strong. But, I likely have it too far from the sensor (I think my spacer is 1.5" so 75mm or so?). I'm thinking of getting a 25mm spacer to test out.
Very best,
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Nice! Looking forward to your first try in CaK!
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Working on that next, will likely try it around F20 for the Cak, and then last I will try to get a 430nm filter for white light, but that's low on my list right now since this aperture isn't truly going to show off the iron bits in Gband convection cells (I think 10" is minimum to really start seeing them clearly if I recall?). So for now, I'd be happy with HA and Cak and just standard white light (maybe continuum UV-A) for spots & cells.
But one piece at a time. Everything is just so dang expensive.
Very best,
But one piece at a time. Everything is just so dang expensive.
Very best,
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
F/20 with the pixel size of the 174MM seems a bit on the low side if you want high resolution.
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Agreed, for the pixel size, just depends on seeing. When seeing is questionable, I lower image scale so I walk away with at least something. If seeing allows, sure, would love to image at F28~30!
Very best,
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Marty:
Very nice setup and super first light.
Best wishes,
Eric.
Very nice setup and super first light.
Best wishes,
Eric.
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Very nice images indeed congrats on the kit
Alexandra
Alexandra
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
These first light images form the C8 are very good, and the FD shots from the ST80 are coming out very well
Brian
Brian
Brian Colville
Maple Ridge Observatory
Cambray, ON Canada
Photos: https://www.flickr.com/photos/185395281@N08/albums
10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
Maple Ridge Observatory
Cambray, ON Canada
Photos: https://www.flickr.com/photos/185395281@N08/albums
10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Great images for a first try, Marty
Franco
Franco
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Great first out session - looks like you were dodging clouds a fair bit! Happy second light.
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Hi Marty,
I bought the dedicated 0.7x Edge HD reducer for my 8" HaT just before the close of last years solar season and was very pleased with the results. My Quark seems to really like f7 as a starting point. I am then able to use my Baader 0.7x solar telecompressor after the quark which gets me around f22 without adverse vignetting on my 174 size sensor.
Agreed this is somewhat undersampling with these large pixels, but when the seeing is not what you'd like it gives more usable imaging sessions.
Mark
I bought the dedicated 0.7x Edge HD reducer for my 8" HaT just before the close of last years solar season and was very pleased with the results. My Quark seems to really like f7 as a starting point. I am then able to use my Baader 0.7x solar telecompressor after the quark which gets me around f22 without adverse vignetting on my 174 size sensor.
Agreed this is somewhat undersampling with these large pixels, but when the seeing is not what you'd like it gives more usable imaging sessions.
Mark
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Hi Mark...
Good to hear the reducer/Quark combo works well for you.
I was wondering how you have the Quark mounted behind the reducer? They have an ideal spacing behind the reducer and I wonder if the camera/Quark is sitting in the 146mm spacing behind the reducer (146mm is the spacing for my C9.25HD)? Since the FOV is relatively small compared to a deep sky setup the effects of not matching the ideal spacing my not be as critical since the camera is only looking in the centre of the field.
Bedsides the spacing I cannot get my Edge to reach focus with the DSII mod at F7 since the filter mount puts the etalon too far back to allow the mirror to focus. I was hoping the F7 would work better than the F10 which produced a very small sweet spot (the DSII is designed for a F7 light cone like the LS80T it was designed for).
Are you using a crayford style focuser or just the built in mirror shift focuser?
Thanks,
Brian
Good to hear the reducer/Quark combo works well for you.
I was wondering how you have the Quark mounted behind the reducer? They have an ideal spacing behind the reducer and I wonder if the camera/Quark is sitting in the 146mm spacing behind the reducer (146mm is the spacing for my C9.25HD)? Since the FOV is relatively small compared to a deep sky setup the effects of not matching the ideal spacing my not be as critical since the camera is only looking in the centre of the field.
Bedsides the spacing I cannot get my Edge to reach focus with the DSII mod at F7 since the filter mount puts the etalon too far back to allow the mirror to focus. I was hoping the F7 would work better than the F10 which produced a very small sweet spot (the DSII is designed for a F7 light cone like the LS80T it was designed for).
Are you using a crayford style focuser or just the built in mirror shift focuser?
Thanks,
Brian
Brian Colville
Maple Ridge Observatory
Cambray, ON Canada
Photos: https://www.flickr.com/photos/185395281@N08/albums
10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
Maple Ridge Observatory
Cambray, ON Canada
Photos: https://www.flickr.com/photos/185395281@N08/albums
10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
My 0.7x Edge reducer is on the way. I'm going to want it for DSO as well as other applications. So I should be able to test it sometime within a week or so as another option. My Quark was quite happy at F10 and transmission was good. I just had issues with the placement of the focal reducer and vignetting. Too close to the sensor, no vignetting, but appropriately focal reduced and way oversampled. Too far, and it vignetted hard, and seemed more than the appropriate amount of focal reducing producing a tiny scale. I have some spacers coming so I can try different distances to find a happy spot. Or maybe a combination of the Edge reducer and another focal reducer, like you did.marktownley wrote: ↑Sat Feb 23, 2019 8:32 am Hi Marty,
I bought the dedicated 0.7x Edge HD reducer for my 8" HaT just before the close of last years solar season and was very pleased with the results. My Quark seems to really like f7 as a starting point. I am then able to use my Baader 0.7x solar telecompressor after the quark which gets me around f22 without adverse vignetting on my 174 size sensor.
Agreed this is somewhat undersampling with these large pixels, but when the seeing is not what you'd like it gives more usable imaging sessions.
Mark
Mind linking to that Baader 0.7x Telecompressor for reference?
Very best,
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
- MalVeauX
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Thanks,
Looks like this is the one over here?
https://www.highpointscientific.com/baa ... sor-cmprsr
I'll have to watch for that. I like the idea of it. Don't like the idea of the cost of two reducers (the edge & the baader, sheesh!)
Very best,
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Re: Today's Filament & Plage, Full Disc | HA | Feb 21 2019
Yup, that's the one Marty. I didn't like the idea of 2 reducers either, but it works
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!