Re: [APML]: August photos

["Martin C Germano" <mgermano@gte.net>]

The Astro-Photography Mailing List
------------------------------------

Steve,
>I am curious about what the folks on the list think about a
comparison
>of your latest M2 and M15 shots as compared to mine, available on my
>homepage. Mine do not show as much "burn in" of their cores, but of
>course, mine are also taken for a less exposure time, coupled with
being
>taken through light pollution filters.

I only shoot these kind of pictures at a time when I can not get in a
'normal' length deep exposure, usually at the end of the night. I am
just 'filling in' objects that I have not yet shot with the 14.

> Also, I developed my M15 TP negative in HC-110, which I find is
noticeably benefitial for reducing
>core burn in for globulars on TP. Our scopes are comparable (yours a
>14.5" f/5 Newt, mine a 16" f/4.7), and I am very glad to see that I
am
>getting as good a resolution as you, being that I shoot from a
>metropolitan area of some 2 million people. Where did you shoot these
>from? Those really dim galaxy shots of yours are impressive. I doubt
>that I could capture such images from my site.


You are right. TP2415 developed in D-19 is not good for ANY 'bright'
object when you want to record faint outer parts.
I do my deep sky from various parts of southern California. Mt Pinos,
the northern deserts (Mojave area) and north of Santa Barbara are some
usual sites. See the IDA site on my links page to see typical limiting
magnitudes.

I tried using a deep sky filter from my home, but the pictures never
look as good as unfiltered shots from a dark site.

Keep up the good work,

Marty

Martin C Germano
Thousand Oaks, Calif 91360
mailto:mgermano@gte.net
Home Page: http://home1.gte.net/mgermano/index.htm