Dear friends,
Todays FD images in really poor seeing.
FD image in H-Alpha using a Takahashi Sky-90II with Coronado 90mm/BF15, Coronado 2x CeMax and ASI 1600mm PRO.
Sun FD in H-Alpha 19th of August 2021
FD image in CaK using a William Optics ZenithStar 61II stopped down to 46mm, Lunt CaK 1200 module, Coronado 2x CeMax and ASI 183mm camera.
Sun FD in CaK 19th of August 2021
Sun FD in CaK 19th of August 2021 - colorized
As usual click on links to view full size images.
Thanks and best regards,
Arne
Sun in H-Alpha and 19th of August 2021
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Re: Sun in H-Alpha and 19th of August 2021
For a fairly bland disk Arne, you have certainly pulled-out the detail.
Thanks for sharing
Terry
Thanks for sharing
Terry
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Re: Sun in H-Alpha and 19th of August 2021
Nice work Arne, I especially like the colored CaK one!
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! "
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Re: Sun in H-Alpha and 19th of August 2021
Bad seeing is better than no seeing Some great full discs Arne looks like some of those dreaded newtons rings creeping in to the top image
Alexandra
Alexandra
- arnedanielsen
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Re: Sun in H-Alpha and 19th of August 2021
Thank you very much Terry, James and Alexandra!
Terry: The Sun is rather quiet... hope the activity will increase again soon.
Alexandra: I'm not sure why this is. The setup is permanently mounted and other than I refocusing (usually not necessary) I don't make any changes to the setup. I try to place the Sun in center each time and use the same method for taking flats. Still some hint of NR appears on some images and are gone on others.
And Yes, bad seeing is better than no seeing. :-)
Best regards,
Arne
Terry: The Sun is rather quiet... hope the activity will increase again soon.
Alexandra: I'm not sure why this is. The setup is permanently mounted and other than I refocusing (usually not necessary) I don't make any changes to the setup. I try to place the Sun in center each time and use the same method for taking flats. Still some hint of NR appears on some images and are gone on others.
And Yes, bad seeing is better than no seeing. :-)
Best regards,
Arne