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Lion Nebula SH2-132 - RC71

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Posts Made By: Jim Thommes

February 11, 2007 11:25 PM Forum: CCD Imaging and Processing/Deep Sky

Running Man and Cluster NGC 1981

Posted By Jim Thommes
Guys,
Thanks for the comment on the image.

I was a bit fearfull of the framing actually looking like the object center was missed in the exposures. I still wonder about how the framing presents itself. Thanks for the input.

February 13, 2007 04:30 AM Forum: CCD Imaging and Processing/Deep Sky

M106

Posted By Jim Thommes
Jason,
I like the image a lot. I have a hard time seeing the effects of your concerns in the image. So I think you must have processed well to work around the issues.

February 18, 2007 11:25 PM Forum: CCD Imaging and Processing/Deep Sky

Leo's Triplet, Ivan's way...

Posted By Jim Thommes
Ivan,
Pretty cool images with the Starshoot and the 66. Nice detail on the Triplet and the Rosette. Colors on both seem to be favoring the blue a bit - coming from the Starshoot you think?

February 18, 2007 11:30 PM Forum: CCD Imaging and Processing/Deep Sky

M1 over 3 days

Posted By Jim Thommes
Paul,
Looking pretty good. Looks like the data must have gone together well.

February 18, 2007 11:58 PM Forum: CCD Imaging and Processing/Deep Sky

Ok, let me have it!

Posted By Jim Thommes
Eric,
Looks like the detail was well preserved from the mono version and the color looks good. Your only challenge was alignment and haloes?

Do you use a full scale, offset, rotate, skew allignment program like Registar or Astroart - if so, shouldn't have so much of a problem. If you manually choose alignment stars, do you choose small isolated stars well off the edges?

I do a lot of 2x2 bin on color data. If you want to minimize your haloes, try selecting the medium to bright stars and running a minimum filter on them in the RGB's combined prior to adding any luminance or luminance layering. The 2x2 bin can bloat larger than your luminance - particularly if the luminance was an HA. Don't worry if you over minimize - worst it does it take your brighter stars to white (which they are likely to come out as anyway being bright).

My 2 cents worth...


February 19, 2007 10:53 PM Forum: CCD Imaging and Processing/Deep Sky

M97 - the owlnebula

Posted By Jim Thommes
Dietmar,
Glad to hear you got out - I was clouded out for the weekend.

The Owl is a great image. I really like the outer red ring. I guess separate and short color exposure may miss that - but you get it with 8 and 12 min subs with the SXV-M25C.

February 19, 2007 11:01 PM Forum: CCD Imaging and Processing/Deep Sky

Another Rose

Posted By Jim Thommes
Tom,
Looks really good. I am wonder what you did to control the blue bloat? Did you go a bit far and as such lost some of the blue on the stars?

February 19, 2007 11:12 PM Forum: CCD Imaging and Processing/Deep Sky

Not the Horses Head.

Posted By Jim Thommes
Ivan, Eric,

Thanks for the comments.

March 12, 2007 01:06 AM Forum: CCD Imaging and Processing/Deep Sky

Markarian's Chain

Posted By Jim Thommes
Alan,
So this is amateur astronomy. Sometimes things go wrong. It is the salvaging of such data that can be fun sometimes. Besides, you never know what you might catch in that data...

In this case, there seems to be something extra around the Eyes (NGC4438, MGC4435). Perhaps it comes from a guiding studder or a stacking issue. Or, maybe you got something there...

March 13, 2007 03:12 AM Forum: CCD Imaging and Processing/Deep Sky

A couple of Messier Open Clusters

Posted By Jim Thommes
Thanks for the comments guys...

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