Telescope Reviews: M81 and M82

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Astrophotography and Sketching >> DSLR & Digital Camera Astro Imaging & Processing

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bluedandelion
Carpal Tunnel

Reged: 08/17/07

Loc: Hazy Hollow, Western WA

M81 and M82 new

#5658993 - 02/02/13 10:05 PM

M81 and M82 imaged with a modified Canon 350D and an SV856 at f/7 from Table Mountain, WA. No filters were used. Exposure was 5 mins x 24 for a total of two hours at ISO 800. This is the full scale center crop. Processed with Pixinsight.

Full scale image on Flickr.

Thanks for looking.

Ajay

Post Extras:

zerro1
Postmaster

Reged: 08/02/09

Loc: Smokey Point , 48.12°N 122.25°...

Re: M81 and M82 [Re: bluedandelion]
#5659077 - 02/02/13 10:59 PM

Sweet Image Ajay!

Post Extras:

bluedandelion
Carpal Tunnel

Reged: 08/17/07

Loc: Hazy Hollow, Western WA

Re: M81 and M82 new

[Re: zerro1]
#5659123 - 02/02/13 11:32 PM

Thank you, Robert.

Ajay

Post Extras:

carlstronomy
super member

Reged: 06/03/12

Loc: Brisbane, QLD, Australia

Re: M81 and M82 new

[Re: bluedandelion]
#5659130 - 02/02/13 11:37 PM

Nice image Ajay, very well processed and nice and clear. I personally like the natural looks not the oversaturated, which is what you have here, very nice for 2 hours of data.

Clear Skies (comma in the right spot I think but is still reads wrong)

Carl

Edited by carlstronomy (02/03/13 12:03 AM)

Post Extras:

bluedandelion
Carpal Tunnel

Reged: 08/17/07

Loc: Hazy Hollow, Western WA

Re: M81 and M82 new

[Re: carlstronomy]
#5659152 - 02/02/13 11:58 PM

Thank you Carl. Appreciate the compliment.

On saturation: Agree that it is enhanced but I beg to differ that it is overly so. I tried to bring out the H-alpha regions a bit. If you look at M81 it is not uncommon to see those colors. I was surprised that M82 came out the way it did, but I like it. To each his own.

Ajay

Post Extras:

carlstronomy
super member

Reged: 06/03/12

Loc: Brisbane, QLD, Australia

Re: M81 and M82 new

[Re: bluedandelion]
#5659161 - 02/03/13 12:02 AM

Ajay sorry ,I read my post back I was wanting to say yours was not oversaturated not the other way around

sorry missed a comma,,, ....

Post Extras:

pfile
Carpal Tunnel

Reged: 06/14/09

Re: M81 and M82 new

[Re: carlstronomy]
#5659172 - 02/03/13 12:09 AM

really nice - and just 2 hours? wow.

Post Extras:

fco_star
Pooh-Bah

Reged: 12/13/10

Loc: Texas, Midland

Re: M81 and M82 new

[Re: pfile]
#5659193 - 02/03/13 12:31 AM

beautiful picture Ajay

Post Extras:

bluedandelion
Carpal Tunnel

Reged: 08/17/07

Loc: Hazy Hollow, Western WA

Re: M81 and M82 new

[Re: carlstronomy]
#5659203 - 02/03/13 12:37 AM

Quote:

Ajay sorry ,I read my post back I was wanting to say yours was not oversaturated not the other way around sorry missed a comma,,, ....

No problems Carl. Its all good. In the field of pretty picture making some subjectivity is bound to exist. So I did not take it poorly. Thanks for the clarification.

Ajay

Post Extras:

bluedandelion
Carpal Tunnel

Reged: 08/17/07

Loc: Hazy Hollow, Western WA

Re: M81 and M82 new

[Re: pfile]
#5659213 - 02/03/13 12:42 AM

Quote:

really nice - and just 2 hours? wow.

Skies were nice and dark. Here's some info about the site: http://www.tmspa.com/infopages/site_info.html
Last summer a wildfire swept through here as large parts of central WA burned.

Back on the subject, its the dark skies combined with Pixinsight magic (HDR multiscale) which you know all about:)

Ajay

Post Extras:

bluedandelion
Carpal Tunnel

Reged: 08/17/07

Loc: Hazy Hollow, Western WA

Re: M81 and M82 new

[Re: fco_star]
#5659214 - 02/03/13 12:43 AM

Thank you Francisco.

Ajay

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srosenfraz
Carpal Tunnel

Reged: 03/06/11

Loc: United States

Re: M81 and M82 new

[Re: bluedandelion]
#5659269 - 02/03/13 01:51 AM

Great job on this image, Ajay. Your colors for both galaxies are superb.

Post Extras:

davesaunders
sage

Reged: 04/18/08

Loc: United Kingdom

Re: M81 and M82 new

[Re: srosenfraz]
#5659369 - 02/03/13 05:03 AM

WOW!!

Dave.

Post Extras:

Nils_Lars
Postmaster

Reged: 01/04/08

Loc: Santa Cruz Mountains , CA

Re: M81 and M82 new

[Re: davesaunders]
#5660464 - 02/03/13 05:52 PM

Excellent work here Ajay.

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avarakin
Carpal Tunnel

Reged: 07/13/09

Loc: Parsippany NJ, USA

Re: M81 and M82 new

[Re: Nils_Lars]
#5660954 - 02/04/13 12:02 AM

Excellent image with lots of details!

Alex

Post Extras:

bluedandelion
Carpal Tunnel

Reged: 08/17/07

Loc: Hazy Hollow, Western WA

Re: M81 and M82 new

[Re: avarakin]
#5661039 - 02/04/13 01:22 AM

Scott, Dave, Erik and Alex,

Thanks.

Ajay

Post Extras:

microstar
scholastic sledgehammer

Reged: 01/05/08

Loc: Canada

Re: M81 and M82 new

[Re: bluedandelion]
#5661065 - 02/04/13 01:58 AM

Very nice detail for such a short integration time.
...Keith

Post Extras:

mmalik
Carpal Tunnel

Reged: 01/13/12

Loc: USA

Re: M81 and M82 new

[Re: bluedandelion]
#5661155 - 02/04/13 05:58 AM

Like it. Thx

Post Extras:

bluedandelion
Carpal Tunnel

Reged: 08/17/07

Loc: Hazy Hollow, Western WA

Re: M81 and M82 new

[Re: mmalik]
#5662565 - 02/04/13 09:59 PM

Thank you Keith and Mike.

Many people (here and on Flickr) have commented on the amount of detail I was able to get with 2 hrs with a canon 350D at 800 ISO.

To tell the truth my first effort was not so great.

This image was acquired in my second season in 2010. However I did collect flats, flat darks to correct the flats and darks. I don't use bias frames because I do traditional dark subtraction and dark frames already contain the bias signal. Proper calibration helped stretch the data more. I also had nice dark skies and the seeing was better than average for most part.

Ajay

Post Extras:

bouffetout
professor emeritus

Reged: 11/21/12

Loc: Canada

Re: M81 and M82 new

[Re: bluedandelion]
#5669874 - 02/08/13 10:13 PM

Congratulations Ajay ,That's a very fine photo !

Post Extras:

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