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

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EdmontonAB
Pooh-Bah
*****

Reged: 04/30/08

Loc: Sooke, BC , Canada
M51 Whirlpool Galaxy after collimation new
      #5778799 - 04/04/13 11:33 PM Attachment (130 downloads)

I present my M51 after collimating my AT8RC. I am very pleased with the amount of detail I was able to resolve in the core as seen in the high res photo. One dark band in the core is 3 pixels wide and at a scale of 0.86"/pixel, the band is only 2.5" across.

Image Taken: 31 Mar 13
Object: M51 The Whirlpool Galaxy in Canes Venatici
Mount: AP Mach 1
Imaging scope: AT8RC with CCDT67 reducer
Imaging FL: 1150mm
Imaging camera: Hypercam modded Canon T1i
Lights: 24 x 5 mins ISO 1600
Calibration: 25 flats
Guide scope: KWIQ Autoguider
Other details: Captured with Backyard EOS guided with Metaguide, stacked in DSS processed in Photoshop and Pixinsight LE

High Res 1600 x 1135


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Toxic Coolaid
professor emeritus


Reged: 10/01/11

Loc: NorthEast Tennessee
Re: M51 Whirlpool Galaxy after collimation new [Re: EdmontonAB]
      #5778804 - 04/04/13 11:35 PM

beautiful. Very nice detail!

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zawijava
scholastic sledgehammer
*****

Reged: 10/06/07

Loc: Wells, Maine 04090
Re: M51 Whirlpool Galaxy after collimation new [Re: EdmontonAB]
      #5778821 - 04/04/13 11:51 PM

very very nice! the image has a depth of field to it that gives me a sense that the smaller Galaxy is of some distance behind M51. Usually images and/or viewing at the eyepiece make the 2 Galaxies appear to be on the same plane.

-Tim


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waassaabee
Postmaster
*****

Reged: 11/26/07

Loc: Central California Coast
Re: M51 Whirlpool Galaxy after collimation new [Re: zawijava]
      #5778842 - 04/05/13 12:28 AM

Excellent work!! How much fun did you have collimating the AT8RC? Did you have to adjust the primary? That was a royal pain for me.

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srosenfraz
Post Laureate
*****

Reged: 03/06/11

Loc: United States
Re: M51 Whirlpool Galaxy after collimation new [Re: waassaabee]
      #5778852 - 04/05/13 12:36 AM

Great job on this image, Steve - excellent details and very nice color, too.

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Nils_Lars
Postmaster
*****

Reged: 01/04/08

Loc: Santa Cruz Mountains , CA
Re: M51 Whirlpool Galaxy after collimation new [Re: srosenfraz]
      #5778863 - 04/05/13 12:45 AM

You definitely have that rig running well Steve , some sharp details in M51 here.

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EdmontonAB
Pooh-Bah
*****

Reged: 04/30/08

Loc: Sooke, BC , Canada
Re: M51 Whirlpool Galaxy after collimation new [Re: Nils_Lars]
      #5778881 - 04/05/13 01:02 AM

Thank you everyone.

Gary, collimation was pretty easy. I tried to align all the optics and components visually using a collimation cap and by looking through the front of the scope. I adjusted both primary and secondary. When I checked collimation by taking a short exposure, it was grossly out. I used Metaguide and secondary adjustments to collimate a star at the centre and used BackyardEOS and primary adjustments for stars on the edge. Alternated between the two and within a couple of hours had everything aligned. If I had to do it all over again I figure it could be done in less then 1/2 hour. I was always worried about colllimating a scope but this was a great learning experience and have no fear of touching the mirrors.


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Tom and Beth
Post Laureate


Reged: 01/08/07

Loc: Tucson, AZ
Re: M51 Whirlpool Galaxy after collimation new [Re: EdmontonAB]
      #5778937 - 04/05/13 02:41 AM

Amazing level of detail!

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mmalik
Post Laureate
*****

Reged: 01/13/12

Loc: USA
Re: M51 Whirlpool Galaxy after collimation new [Re: EdmontonAB]
      #5778942 - 04/05/13 02:51 AM

That looks very nice.

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snowcrow
sage


Reged: 10/21/12

Loc: Vermont
Re: M51 Whirlpool Galaxy after collimation new [Re: mmalik]
      #5779060 - 04/05/13 07:42 AM

Awesome.. lots of detail!!

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ahopp
sage


Reged: 05/24/12

Re: M51 Whirlpool Galaxy after collimation new [Re: snowcrow]
      #5779079 - 04/05/13 08:01 AM

Wonderful...

Tony


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jambroseus
professor emeritus


Reged: 04/05/07

Loc: Mount Laurel, New Jersey
Re: M51 Whirlpool Galaxy after collimation new [Re: EdmontonAB]
      #5779096 - 04/05/13 08:17 AM

Super shot Ed, pinpoint stars and excellent detail!

John


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rflinn68
Carpal Tunnel


Reged: 03/09/12

Loc: Arkansas
Re: M51 Whirlpool Galaxy after collimation new [Re: jambroseus]
      #5779121 - 04/05/13 08:36 AM

Beautiful! Great job!

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steelhead
journeyman


Reged: 01/27/11

Loc: Smithers, BC
Re: M51 Whirlpool Galaxy after collimation new [Re: EdmontonAB]
      #5779357 - 04/05/13 10:46 AM

Wow, great shot!

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TimN
Pooh-Bah


Reged: 04/20/08

Loc: Ontario, Canada
Re: M51 Whirlpool Galaxy after collimation new [Re: steelhead]
      #5779696 - 04/05/13 02:02 PM

Nice detail and color!

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nofxrx
Vendor (HyperCams & Mods)
*****

Reged: 07/12/05

Loc: Palm Bay,Florida
Re: M51 Whirlpool Galaxy after collimation new [Re: TimN]
      #5782397 - 04/06/13 06:47 PM

Wow, Steve! That is an amazing image..
Great work.


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carlo rocchi
Pooh-Bah


Reged: 12/02/09

Loc: Milan, Italy
Re: M51 Whirlpool Galaxy after collimation new [Re: nofxrx]
      #5783081 - 04/07/13 04:20 AM

Great shot, very impressive detail!

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waassaabee
Postmaster
*****

Reged: 11/26/07

Loc: Central California Coast
Re: M51 Whirlpool Galaxy after collimation new [Re: EdmontonAB]
      #5783238 - 04/07/13 07:52 AM

Quote:

Gary, collimation was pretty easy. I tried to align all the optics and components visually using a collimation cap and by looking through the front of the scope. I adjusted both primary and secondary. When I checked collimation by taking a short exposure, it was grossly out. I used Metaguide and secondary adjustments to collimate a star at the centre and used BackyardEOS and primary adjustments for stars on the edge. Alternated between the two and within a couple of hours had everything aligned. If I had to do it all over again I figure it could be done in less then 1/2 hour. I was always worried about collimating a scope but this was a great learning experience and have no fear of touching the mirrors.



My first attempt proved a bit frustrating, but after understanding all the adjustments a bit better, it's very simple now. Great scopes!!


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bluedandelion
Carpal Tunnel
*****

Reged: 08/17/07

Loc: Hazy Hollow, Western WA
Re: M51 Whirlpool Galaxy after collimation [Re: waassaabee]
      #5785064 - 04/07/13 11:41 PM

Well done. That's a great image.

Ajay


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fco_star
Pooh-Bah
*****

Reged: 12/13/10

Loc: Texas, Midland
Re: M51 Whirlpool Galaxy after collimation new [Re: bluedandelion]
      #5785337 - 04/08/13 07:11 AM

very nice picture

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