Hi everybody
Today it was again excepetionally warm in Italy, warmest october that I could ever remember. It felt like summer and seeing was very good, despite a local southwesterly breeze that at times was shaking the mount.
I tried imaging some sunspots with the mak at about F19, which will be slightly oversampling the theoretical resolution of the 180 mm Masutov with the small pixels of ASI 120 sensor. Nevertheless, this is the configuration I use for planet imaging, but I never tried that on the sun, since I think the local daylight seeing does not allow this.
Well, actually focusing was easy and the results are not bad I think. I shot at 29 fps (which is my maximum rate with the full camera CMOS), getting 2000-2500 frames, of which I stacked the best 20% with autostakkert. Processing was with registax (wavelet filters) Imppg for deconvolution and PS. I think the signal/noise was acceptable and that the photospheric granulation is very evident. Probably with a more modern camera and larger pixels like those of the ASI 174 the results would be more consistent. The fine umbral details of the lonely spot AR3131 can be well appreciated. G and R filter are probably sharper, but the blue filter puts more contrast on the granulation I think. I'm not sure how long can I keep recording without loosing the the details owing to the natural evolution of the photospheric structures. Normally I limit the length of the movie to less than 90 s but a longer acquisition would be probably beneficial, if nature allows that. I then moved to Ar3135, which was closer to the border, slightly more difficult due to the thicker solar atmosphere
Wish you a happy halloween !
AR3131 and 3135 broad band imaging.
-
- Im an EXPERT!
- Posts: 448
- Joined: Mon Apr 25, 2022 8:32 pm
- Has thanked: 368 times
- Been thanked: 612 times
AR3131 and 3135 broad band imaging.
- Attachments
-
- AR31314500focal G filter.jpg (580.1 KiB) Viewed 407 times
-
- AR3131-4500focal-Rfilter.jpg (556.15 KiB) Viewed 407 times
-
- 4500 focal Ar3135 red filter.jpg (638.42 KiB) Viewed 407 times
-
- AR31314500focalBfilter.jpg (534.7 KiB) Viewed 407 times
-
- AR3135 4500 focal G filter.jpg (448.15 KiB) Viewed 407 times
-
- Way More Fun to Share It!!
- Posts: 2142
- Joined: Sun Jul 24, 2022 5:20 am
- Has thanked: 4213 times
- Been thanked: 3818 times
Re: AR3131 and 3135 broad band imaging.
Nice pictures. Bravo.
I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
- 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: 4787 times
- Contact:
-
- Way More Fun to Share It!!
- Posts: 1668
- Joined: Sat Apr 27, 2019 6:44 pm
- Location: Germany
- Has thanked: 2978 times
- Been thanked: 2082 times
Re: AR3131 and 3135 broad band imaging.
Well done. I know how hard it is to image WL on scales like this. Im using no more then 20 - 25s on wl solar structures, but i think the granules develop much slower. So should be fine with 90s. A fast camera is making a big difference though on this application and scale.
Triband C9.25
H-a: Quark Chromosphere with BF mod
WL: Antlia 500nm/ 3nm, 393 nm/ 3nm
Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo)
Player One Apollo Max + Mars MII
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
H-a: Quark Chromosphere with BF mod
WL: Antlia 500nm/ 3nm, 393 nm/ 3nm
Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo)
Player One Apollo Max + Mars MII
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
- 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: AR3131 and 3135 broad band imaging.
Nice closeups!!
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: 448
- Joined: Mon Apr 25, 2022 8:32 pm
- Has thanked: 368 times
- Been thanked: 612 times
Re: AR3131 and 3135 broad band imaging.
Thank you guys, thank tou for your advice Dennis. I will open my wallet and go with the asi 174 mm in the near future. Imx 432 sensor is even better for solar I think , but probably too specialized, pixels are really large. I think the 174 is good also for lunar/ planet imaging with my mak and a c9 that I keep at a different country location.
- Jordan Konisky
- Im an EXPERT!
- Posts: 356
- Joined: Thu Apr 18, 2019 12:08 am
- Location: Verona, Wisconsin
- Has thanked: 386 times
- Been thanked: 270 times
Re: AR3131 and 3135 broad band imaging.
Really nice set of images. Great detail. Thanks for posting.
Jordan t
Jordan t
Jordan -
SkyWatcher ED100 Refractor with Diamond Steeltrack Crawford Focuser
Celestron CG4 Equatorial Mount
Daystar Quark H-Alpha Chromosphere
Lunt CaK B1800 Filter Module
Lunt White Light Solar Wedge
ZWO ASI174MM, ZWOASI1600MM Cameras
SkyWatcher ED100 Refractor with Diamond Steeltrack Crawford Focuser
Celestron CG4 Equatorial Mount
Daystar Quark H-Alpha Chromosphere
Lunt CaK B1800 Filter Module
Lunt White Light Solar Wedge
ZWO ASI174MM, ZWOASI1600MM Cameras
-
- Way More Fun to Share It!!
- Posts: 1668
- Joined: Sat Apr 27, 2019 6:44 pm
- Location: Germany
- Has thanked: 2978 times
- Been thanked: 2082 times
Re: AR3131 and 3135 broad band imaging.
I can confirm, had the 174 myself and its a great camera. Yes, also more versatile then the Apollo Max. The 432 sensor is a complementing camera with its most interesting feature of the huge full well capacity.cte wrote: ↑Mon Oct 31, 2022 2:07 pm Thank you guys, thank tou for your advice Dennis. I will open my wallet and go with the asi 174 mm in the near future. Imx 432 sensor is even better for solar I think , but probably too specialized, pixels are really large. I think the 174 is good also for lunar/ planet imaging with my mak and a c9 that I keep at a different country location.
Triband C9.25
H-a: Quark Chromosphere with BF mod
WL: Antlia 500nm/ 3nm, 393 nm/ 3nm
Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo)
Player One Apollo Max + Mars MII
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
H-a: Quark Chromosphere with BF mod
WL: Antlia 500nm/ 3nm, 393 nm/ 3nm
Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo)
Player One Apollo Max + Mars MII
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
- Montana
- Librarian
- Posts: 34563
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17672 times
- Been thanked: 8791 times
Re: AR3131 and 3135 broad band imaging.
It's beautiful to see the spots in so much detail, great shots
Alexandra
Alexandra
- 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