Re: [APML] Comet Machholz from SW VA

Thanks Stuart! No, I used the Screen/Mask/Invert process outlined in Jerry's book after using Background Subtraction Toolkit to even out the background. Unfortunately my processing turned it uneven. Chris took it and put it through PixInsight and there was a huge improvement in the background so this weekend I'm going to start over again and see if I can do better on it.

Gary

----- Original Message -----

From: Stuart Heggie

To: Discussion of Film Astrophotography

Sent: Wednesday, January 12, 2005 8:34 PM

Subject: Re: [APML] Comet Machholz from SW VA

Gary, it is excellent! 9.5 minutes with 400 speed film pushed once sounds about right. Histograms look good. Nice colour balance getting the California Nebula and the blue nebulosity around the Pleiades. There seems to be a dark area dead centre of the image - did you apply an anti-vignette mask?

Stuart

----- Original Message -----

From: GARY HATFIELD

To: APML

Sent: Wednesday, January 12, 2005 11:03 AM

Subject: [APML] Comet Machholz from SW VA

Here's my small film contribution. Nothing of the caliber of other images from the list but I'll try to get more out of it this weekend. I think there's some tail on the slide, I just haven't figured out how to show it in the image.

Gary

http://www.starryestateobservatory.com/My_Homepage_Files/Page90.html

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