Last saturday I continued some testing of my H alpha setup with the 130 mm apo.
Following the suggestions of some of you, I improved, I hope, the optical train, buying connectors with solid compression rings to avoid mis-alignement of the etalon with respect to the optical axis of the refractor. Besides the daystar yellow erf filter, I used a UV/IR cut from astronomik before the 5 x powermate which hosted the quark, followed by a tilter and by the asi120 camera (see picture below). ASi 120 is my older camera, but I could use it with a 0.5 X reducer screwed in the camera nose to reduce oversampling. With the f:7 apo, I should be imaging around F18/20 for the 3.7 micron pixels of the asi, which however can only record at 29 fps at full sensor. With the 174 I still need to test this setup, but I already know that I will not be able to use the reducer, due to excessive vignetting. I'll try to compensate oversampling with binning and with more frames in the stack
Seeing was not exceptional, but I tried to find the best tuning of the quark, which I think I have found at one or two stops on the left (with respect to the vertical position). Still not sure which is the best position among these two, differences were subtle and I think occasional fluctuations in the seeing were fooling me at times. Last saturday the sun was relatively quiet, but I think I captured and explosive prominence close to AR 3256, which was just at the border.
Today I imaged with the 180 mm mak, ASI 174 and a continuum filter. Very windy day, I could not increase the focal length beyond the native f15, as the mount was shaking under wind gusts. Still, some spot details and granulation was resolved nicely, but I'm well below the theoretical resolution of the scope.
Hope you can find my report of some interest, as always advices are deeply appreciated.
Stefano
H alpha 18 march, continuum 25 march
-
- Im an EXPERT!
- Posts: 446
- Joined: Mon Apr 25, 2022 8:32 pm
- Has thanked: 367 times
- Been thanked: 612 times
H alpha 18 march, continuum 25 march
- Attachments
-
- 20230318_122731.jpg (9.87 MiB) Viewed 232 times
-
- AR3260.jpg (1.36 MiB) Viewed 232 times
-
- Ar3256 3257 3259.jpg (1.53 MiB) Viewed 232 times
-
- prom inverted.jpg (454.05 KiB) Viewed 232 times
-
- AR3256 + prom inverted.jpg (488.1 KiB) Viewed 232 times
-
- AR 3256 colorized.jpg (633.53 KiB) Viewed 232 times
- Petrus
- Almost There...
- Posts: 701
- Joined: Wed Feb 03, 2021 12:14 pm
- Location: Finland
- Has thanked: 1496 times
- Been thanked: 684 times
- Contact:
Re: H alpha 18 march, continuum 25 march
Great captures, also nice to see your impressive imaging setup!
~ Petrus ~
Flickr
https://www.flickr.com/people/194757663@N08/
LS80THa DSII - Calcium II K module 12mm - Lunt Herschel wedge 1.25" - Quark Chromosphere - Solarscout Quark - Sol'Ex
Flickr
https://www.flickr.com/people/194757663@N08/
LS80THa DSII - Calcium II K module 12mm - Lunt Herschel wedge 1.25" - Quark Chromosphere - Solarscout Quark - Sol'Ex
- DeepSolar64
- Way More Fun to Share It!!
- Posts: 18823
- Joined: Thu Sep 05, 2019 12:19 am
- Location: Lowndesville S.C.
- Has thanked: 17572 times
- Been thanked: 16694 times
Re: H alpha 18 march, continuum 25 march
Nice setup and imaging results! Is that a surge prom on the limb?
James
James
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
-
- Im an EXPERT!
- Posts: 446
- Joined: Mon Apr 25, 2022 8:32 pm
- Has thanked: 367 times
- Been thanked: 612 times
Re: H alpha 18 march, continuum 25 march
I'm not sure James, I have nit much experience in chromosperic phenomena. It was quite fast, I think that in about 20 minutes it was gone. Not sure about how it evolved, since occasional clouds were passing in front of the sun obscuring my viewDeepSolar64 wrote: ↑Sat Mar 25, 2023 4:38 pm Nice setup and imaging results! Is that a surge prom on the limb?
James
- DeepSolar64
- Way More Fun to Share It!!
- Posts: 18823
- Joined: Thu Sep 05, 2019 12:19 am
- Location: Lowndesville S.C.
- Has thanked: 17572 times
- Been thanked: 16694 times
Re: H alpha 18 march, continuum 25 march
With it’s form and speed it probably was a surge prom. There was probably a flare beneath it to send the plasma skyward.
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
- MAURITS
- Way More Fun to Share It!!
- Posts: 8507
- Joined: Tue Nov 27, 2018 4:37 pm
- Location: Belgium
- Has thanked: 2412 times
- Been thanked: 4786 times
- Contact:
- ffellah
- Way More Fun to Share It!!
- Posts: 11172
- Joined: Mon Oct 27, 2014 6:46 pm
- Location: Westport, CT USA
- Has thanked: 9145 times
- Been thanked: 6025 times
- Averton
- Way More Fun to Share It!!
- Posts: 1775
- Joined: Wed Jun 01, 2022 1:35 pm
- Has thanked: 3303 times
- Been thanked: 2312 times