M8 and M20

rcheshire (Rowland) · #1 10-08-2010, 08:28 PM

First clear night in weeks.

Unguided - couldn't nail alignment perfectly - ED80 - Canon Kiss F (1000D) - ISO400 - field flattener - Bahtinov mask for focus.

10x3 min 2x5 min, calibrated with library master dark - getting late - so no new darks no flats.

All processing with Pixinsight.

apaulo (Paul) · #2 10-08-2010, 09:58 PM

Hi Rowland

Nice FOV, I love the ED80 the shots which can be produced through your scope are great. I really like the wide field of view. M20 is the highlight nice colors and good contrast. M8 too is well picked out but there seems to be a little bit of coma in the top left hand corner. Considering its a refractor not coma maybe the colimation is out?

Focus is good too Rowland, I look forward to seeing more excellent photos from you.

Best Regards Paul.

Screwdriverone (Chris) · #3 10-08-2010, 10:05 PM

That is very pretty Rowland,

Having M20 tucked in the corner and ALL THOSE stars in between really sets this frame off. Nebulosity looks nice and there is a lot of detail, focus looks excellent.

A bit jealous of the ED80, certainly delivers the goods. Maaaaybe a little purple to my eyes, possibly tone down the red / blue a bit?

Well done! You might have to graduate into Deep Space before too long if you keep this up.

Cheers

Chris

multiweb (Marc) · #4 11-08-2010, 07:59 AM

Great shot. Nice framing.

cybereye (Mario) · #5 11-08-2010, 08:30 AM

I always love seeing these two together. Great shot!

Mario

rcheshire (Rowland) · #6 11-08-2010, 05:32 PM

Thanks guys.

I'll look into the coma issue more closely - thanks Paul for pointing that out.

Chris, I've posted a less blue version. Normalisation helps and requires more attention during image integration.

apaulo (Paul) · #7 11-08-2010, 06:06 PM

Hi Rowland

I don't think its coma, but maybe your colimation. try another image on another night and see if its still there. If its coma you will see stretching on all 4 corners.

Regards Paul.

rcheshire (Rowland) · #8 11-08-2010, 06:48 PM

Hi Paul.

On closer inspection, 3 corners, except for the lower right are affected in diminishing degrees. I'll do as you suggest - once it stops raining!!!

Screwdriverone (Chris) · #9 11-08-2010, 09:24 PM

Ahh, thats better Rowland,

Much nicer thanks....

Cheers

Chris