Winter Wide-Field Ha

Lets brighten up peoples live with all those lovely pictures of the world around us!

Moderator: Montana

Post Reply
User avatar
MapleRidge
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 10133
Joined: Fri Jan 13, 2012 11:58 pm
Location: Cambray, ON Canada
Has thanked: 64 times
Been thanked: 4230 times
Contact:

Winter Wide-Field Ha

Post by MapleRidge »

Good day everyone...

The recent posts by Pedro showing his results with wide-field imaging inspired me to try this...by no means are they very good but just showing my first results. Focus certainly needs to be tighter and I need to brush up on my image processing :o The images were captured on the night of February 7th with my cooled ASI294MM camera, an Astronomik 12nm Ha filter, and a camera lens. This setup was piggy backed on the C14/Takahashi EM400 mount.

The first image was taken with a Rokinon 14mm lens set at f5.6, and is a stack of 20x3 minute exposures. It always amazes me how many H II emission nebula the Ha filter can highlight along the Milky Way. The image is roughly centred on Orion and covers Canis Major/Canis Minor/Monoceros, southern Gemini, Taurus, and norther Eridanus.
Orion_Wide-Ha_14mm_20x180sec-DDP.jpg
Orion_Wide-Ha_14mm_20x180sec-DDP.jpg (1.05 MiB) Viewed 229 times
The next two images were taken with a Smayang 85mm lens set at f2.8...the first is centred on Central Orion and is a stack of 20x2 minute exposures:
Central_Orion-Ha_85mm_20x120sec_DDP-FF-DDP.jpg
Central_Orion-Ha_85mm_20x120sec_DDP-FF-DDP.jpg (866.28 KiB) Viewed 229 times
The second image with this lens covers the Rosette and Cone Nebula regions and is a stack if 21x2 minute exposures:
Rosette_Cone-Ha_85mm_21x120sec_AA-DDP.jpg
Rosette_Cone-Ha_85mm_21x120sec_AA-DDP.jpg (1.68 MiB) Viewed 229 times
Much more work ahead to refine the capture and processing but I'm looking forward to the results.

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, ASI290MM/ASI462+ADC

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 and Baader K-Line
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
User avatar
ffellah
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 10972
Joined: Mon Oct 27, 2014 6:46 pm
Location: Westport, CT USA
Has thanked: 8891 times
Been thanked: 5855 times

Re: Winter Wide-Field Ha

Post by ffellah »

These are very nice and interesting, Brian. Keep them coming !

Franco


User avatar
Montana
Librarian
Librarian
Posts: 34388
Joined: Mon Oct 17, 2011 5:25 pm
Location: Cheshire, UK
Has thanked: 17206 times
Been thanked: 8649 times

Re: Winter Wide-Field Ha

Post by Montana »

Oh my!!!!!! you must have dark skies, I wouldn't have a hope :bow :hamster: :bow

The only place where I came remotely close to a dark sky was in Tenerife and I didn't get long enough on the trip up the mountain :(

Alexandra


User avatar
pedro
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 12187
Joined: Sun May 01, 2016 8:26 pm
Location: Portugal
Has thanked: 14 times
Been thanked: 6500 times
Contact:

Re: Winter Wide-Field Ha

Post by pedro »

Great Wide field Ha images Brian. Looking good

If you use BluXTerminator in PixInsigth you can correct for coma and other stuff


User avatar
KMH
Almost There...
Almost There...
Posts: 925
Joined: Sat Feb 22, 2014 4:45 pm
Has thanked: 597 times
Been thanked: 675 times

Re: Winter Wide-Field Ha

Post by KMH »

Those are really beautiful, Brian!

Kevin


User avatar
rigel123
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6934
Joined: Thu Apr 08, 2021 9:26 pm
Location: Mason, OH
Has thanked: 7945 times
Been thanked: 8171 times
Contact:

Re: Winter Wide-Field Ha

Post by rigel123 »

These are great Brian! Alexandra, with narrow band filters like Brian used you would be amazed at what you can pick up in light polluted skies!


Warren

Lunt LS60T DS
Orion ED80T CF
Meade ETX LS6
Lunt CaK BF1200
Lunt WL Wedge
Baader Photographic Film
ASI174MM
Skyris 236M

https://www.astrobin.com/users/rigel123/
User avatar
rsfoto
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6011
Joined: Mon Jun 18, 2012 8:30 pm
Location: San Luis Potosi, México
Has thanked: 8950 times
Been thanked: 5324 times

Re: Winter Wide-Field Ha

Post by rsfoto »

Hi Brian,

Excellent DSO images. I am waiting to get a new telescope which is an ASKAR 103APO as I sold back the Takahashi FSQ-106ED I had bought from a friend in need of cash and now he bought it back.

Expect to get it some day next week.


regards Rainer

Observatorio Real de 14
San Luis Potosi Mexico

North 22° West 101°
User avatar
MapleRidge
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 10133
Joined: Fri Jan 13, 2012 11:58 pm
Location: Cambray, ON Canada
Has thanked: 64 times
Been thanked: 4230 times
Contact:

Re: Winter Wide-Field Ha

Post by MapleRidge »

Thanks to all for your comments on the images..always appreciated :bow

Pedro, I have yet to get acquainted with PixInsight but I did download the trial last week. These had limited processing, dark subtract, stacked and digital development in ImagePlus and a final tweak in PhotoShop. I neglected to detail the processing.

Alexandra, as Warren pointed out this was a narrow band filter so it is better able to deal with light pollution. My skies are slowly brightening, but on good nights in the Bortle 4 range. The Seestar uses a Duo-band Ha/OIII filter that should help with the sky conditions you have, but I'm not sure what the bandpass is. I see numerous images posted form urban locations and they are getting good results. It maybe a good investment for you to revive your night time astronomy interests.

Rainer, do you have a specific use planned for the new scope (deep sky, solar, other)?

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, ASI290MM/ASI462+ADC

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 and Baader K-Line
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
User avatar
Montana
Librarian
Librarian
Posts: 34388
Joined: Mon Oct 17, 2011 5:25 pm
Location: Cheshire, UK
Has thanked: 17206 times
Been thanked: 8649 times

Re: Winter Wide-Field Ha

Post by Montana »

Pedro, what is coma?

Alexandra


User avatar
rigel123
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6934
Joined: Thu Apr 08, 2021 9:26 pm
Location: Mason, OH
Has thanked: 7945 times
Been thanked: 8171 times
Contact:

Re: Winter Wide-Field Ha

Post by rigel123 »

Montana wrote: Tue Feb 13, 2024 12:19 pm Pedro, what is coma?

Alexandra
Coma is when you don’t have a flat field across the entire FOV and the stars look like little comets all around the edge of the field. Some scopes are corrected for this or you can add a field flattener to help compensate for it.


Warren

Lunt LS60T DS
Orion ED80T CF
Meade ETX LS6
Lunt CaK BF1200
Lunt WL Wedge
Baader Photographic Film
ASI174MM
Skyris 236M

https://www.astrobin.com/users/rigel123/
Post Reply