Hey, I have plenty of lesser images.... but I don't flaunt them!! That will be the worlds shortest line! Cheers, Tyler _____________________________ -----Original Message----- From: utah-astronomy-bounces+tylerallred=earthlink.net@mailman.xmission.com [mailto:utah-astronomy-bounces+tylerallred=earthlink.net@mailman.xmission.co m] On Behalf Of diveboss@xmission.com Sent: Sunday, May 22, 2005 1:40 PM To: utah-astronomy@mailman.xmission.com Subject: Re: [Utah-astronomy] New Image Posted - M106 and Friends You know, it wouldn't hurt to occasionally throw in some lesser quality images just to keep things real... Something just don't seem quite right about these images or yours. Where'd you come from??? ;) BTW, when you compile enough images to produce a calendar or poster, I'll be first in line... Quoting Tyler Allred <tylerallred@earthlink.net>:

Hi all. If anyone is interested.. I just added a new image to my gallery. It shows M106 and several other galaxies.

Here is a link to the thumbnail image. click the thumbnail for the full version.

http://www.utahastronomy.com/album16/Utah_Astronomy_M106_LRGB

Exposure information is listed with the image.

Cheers,

Tyler

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_______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.utahastronomy.com

Thanks Joe. The data for this image were collected on 4/10/05. The moon was at Day 1 of the cycle.... essentially a non-factor. Dark skies are important for capturing nice images of galaxies. I hope you get to use your little camera soon. This rain has been a real astronomical BUMMER! Cheers, Tyler ____________________________ -----Original Message----- From: utah-astronomy-bounces+tylerallred=earthlink.net@mailman.xmission.com [mailto:utah-astronomy-bounces+tylerallred=earthlink.net@mailman.xmission.co m] On Behalf Of Joe Bauman Sent: Sunday, May 22, 2005 2:11 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] New Image Posted - M106 and Friends Sweet! What was the moon phase when you took it, Tyler? I am wondering because I'm excited about getting views with my little SBIG but I don't know if the moon will interfere. Thanks, and keep up the splendid work, Joe _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.utahastronomy.com

Joe, The galaxy is not really very dim. I should be more explicit in my description of the exposure. I exposed 60 minutes worth of luminance data.... but it was composed of 12x5-minute sub-exposures. I average the subs in Maxim DL to create a luminance image. The large number of short exposures allows the random noise to smooth out considerably. The averaged image is MUCH better (smoother and more detailed) than any of the individual subs. The color data were also composed of 5-minute subs. Does this explanation make any sense? Cheers, Tyler _______________________ -----Original Message----- From: utah-astronomy-bounces+tylerallred=earthlink.net@mailman.xmission.com [mailto:utah-astronomy-bounces+tylerallred=earthlink.net@mailman.xmission.co m] On Behalf Of Joe Bauman Sent: Sunday, May 22, 2005 5:33 PM To: Utah Astronomy Subject: RE: [Utah-astronomy] New Image Posted - M106 and Friends I've had just one outing with my S-401 (I think it's called). I took views of the center of the Lagoon Nebula, which pleased me. But I know I can do much, much better. -- I'm a little surprised at the length of your exposures. Is the galaxy fairly dim? Thanks, Joe _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.utahastronomy.com

Joe, I don't really know your camera, so I can only speculate. Can you remove one of the filters and take luminance data only? Can you use the camera without a filter? Perhaps you can get a matching clear filter for the set and replace (temporarily) one of your color filters. You should contact SBIG and ask them directly. My camera has 5 filter slots on the filter wheel (an SBIG CFW8), so I can use a clear, red, green, blue, and Ha filter for any exposure, without changing out a filter. The wheel simply rotates the selected filter into place. I spend most of my time imaging with the clear filter, and add a little color data at the end of a session. The human eye is not really all that sensitive to the color data, so it doesn't need to be as smooth and detailed as the luminance data. If you saw my typical RGB data before luminance is layered over the top, you would break into laughter... it is usually pretty bad! The luminance is the place to spend your time and effort.... then add a little color you have arrived!! Cheers, Tyler -----Original Message----- From: utah-astronomy-bounces+tylerallred=earthlink.net@mailman.xmission.com [mailto:utah-astronomy-bounces+tylerallred=earthlink.net@mailman.xmission.co m] On Behalf Of Joe Bauman Sent: Sunday, May 22, 2005 6:23 PM To: Utah Astronomy Subject: RE: [Utah-astronomy] New Image Posted - M106 and Friends My SBIG has three color filters. I understand about averaging and stacking. But how do I get a luminance exposure (or a series of them like you did) without using one of the color filters? Sorry to bug you -- Joe _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.utahastronomy.com