CaK from the 27th and MiniSHG H alpha 28th Oct

this is the main message area for anything solar :)
Post Reply
User avatar
Merlin66
Librarian
Librarian
Posts: 3802
Joined: Tue Dec 13, 2011 1:23 pm
Location: St Leonards, Australia
Has thanked: 96 times
Been thanked: 266 times
Contact:

CaK from the 27th and MiniSHG H alpha 28th Oct

Post by Merlin66 »

27/10 First day without cloud/ wind etc.
Managed a set of CaK with the Vixen 90M.
The current activity is impressive, some six numbered AR's visible :shock:
The Raben map shows them all.

AR 2887 is very photogenic! A prominent sunspot with umbra/ penumbra and a "family" of smaller spots and faculae following behind.
The new AR 2891 in the north looks very promising.
All it all a great time for solar observers.
115521.jpg
115521.jpg (96.74 KiB) Viewed 85 times
Capture.JPG
Capture.JPG (71.88 KiB) Viewed 85 times
115842.jpg
115842.jpg (309.73 KiB) Viewed 85 times
120040.jpg
120040.jpg (658.64 KiB) Viewed 85 times
120250.jpg
120250.jpg (321.71 KiB) Viewed 85 times
28/10 Modifying the MiniSHG to improve the optics. A 9sec scan in H alpha...
113453.jpg
113453.jpg (187.17 KiB) Viewed 85 times
113453_prom.jpg
113453_prom.jpg (120.38 KiB) Viewed 85 times
114411_crop1.jpg
114411_crop1.jpg (163.33 KiB) Viewed 83 times
114411_crop2.jpg
114411_crop2.jpg (225.44 KiB) Viewed 83 times
The performance definitely seems to reflect the quality of the optics used.
The jump from a $2 Surplus Shed achromat to a $75 Shelyak "custom designed" achromat, although costly, showed immediately an improved outcome.
Re-building the collimator and testing the focus/ infinity focus on the slit plate, is a bit fiddly, but I'm sure will be worth the effort.


"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy  
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
User avatar
DeepSolar64
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 7261
Joined: Thu Sep 05, 2019 12:19 am
Location: Edneyville North Carolina U.S.A.
Has thanked: 5758 times
Been thanked: 4552 times

Re: CaK from the 27th and MiniSHG H alpha 28th Oct

Post by DeepSolar64 »

CaK shows up plage/faculae better than white light does, especially away from the limb. The MiniSHG does quite well in Ha!

Thanks for sharing.

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
ZWO ASI178MM monochrome camera
Lunt, Coronado, TeleVue, Orion and Meade eyepieces

Image Visual Observer
" Way more fun to see it! "
User avatar
marktownley
Librarian
Librarian
Posts: 32609
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 6261 times
Been thanked: 2955 times
Contact:

Re: CaK from the 27th and MiniSHG H alpha 28th Oct

Post by marktownley »

That Ha full disk is the business Ken!


Image
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!
User avatar
Montana
Librarian
Librarian
Posts: 27261
Joined: Mon Oct 17, 2011 5:25 pm
Location: Cheshire, UK
Has thanked: 6605 times
Been thanked: 3068 times

Re: CaK from the 27th and MiniSHG H alpha 28th Oct

Post by Montana »

Superb CaK and the SHG image is your best ever, both clear and detailed, fabulous!! :bow :hamster:

Alexandra


User avatar
Merlin66
Librarian
Librarian
Posts: 3802
Joined: Tue Dec 13, 2011 1:23 pm
Location: St Leonards, Australia
Has thanked: 96 times
Been thanked: 266 times
Contact:

Re: CaK from the 27th and MiniSHG H alpha 28th Oct

Post by Merlin66 »

Thanks guys,
appreciated!


"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy  
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
User avatar
ffellah
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 5765
Joined: Mon Oct 27, 2014 6:46 pm
Location: Westport, CT USA
Has thanked: 2344 times
Been thanked: 1465 times

Re: CaK from the 27th and MiniSHG H alpha 28th Oct

Post by ffellah »

A great set at both lights, Ken

Franco


User avatar
eroel
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 7602
Joined: Mon Dec 19, 2011 10:45 pm
Location: México D.F.
Been thanked: 2163 times

Re: CaK from the 27th and MiniSHG H alpha 28th Oct

Post by eroel »

Ken:
Super CaK images, thanks for sharing them.
Best wishes.
Eric.


User avatar
arnedanielsen
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 1366
Joined: Fri Apr 18, 2014 10:42 pm
Location: Vestby, Norway
Has thanked: 1315 times
Been thanked: 1052 times
Contact:

Re: CaK from the 27th and MiniSHG H alpha 28th Oct

Post by arnedanielsen »

Beautiful collection of images!

Best regards,
Arne


User avatar
Merlin66
Librarian
Librarian
Posts: 3802
Joined: Tue Dec 13, 2011 1:23 pm
Location: St Leonards, Australia
Has thanked: 96 times
Been thanked: 266 times
Contact:

Re: CaK from the 27th and MiniSHG H alpha 28th Oct

Post by Merlin66 »

Thanks for the feedback, always appreciated.
My next challenge is to go for the Helium D3.


"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy  
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
Post Reply