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Posts Made By: Robert Guzauskas

January 26, 2005 05:35 PM Forum: Equipment Talk

Hubble's service

Posted By Robert Guzauskas
Look's like the Hubble's future is once again up for grabs. Here's my view:

If the Hubble's continued existence is so important to both amateur and professional astronomers, let's put our money where our mouth is. Let's start a Fund Raiser to service the Hubble!!

And maybe ANACORTES could hold the funds.

Bob Guzauskas
West Palm Beach, FL

May 2, 2005 12:50 AM Forum: Film Astrophotography - Imaging and Processing

Sheet film for wide fields

Posted By Robert Guzauskas
Remember sheet film? Well...

I have a 4x5 Speed Graphic and several lenses. I intend to do some wide field astrophotography. Any suggestions on modern sheet films for my application will be greatly appreciated.

June 10, 2005 11:34 PM Forum: Film Astrophotography - Imaging and Processing

Stereo astrophotography

Posted By Robert Guzauskas
I have read passing references to the use of stereo techniques in astrophotography: it sounds like the Palomar POSS (Sky Survey) was done in stereo.

Can anyone comment or point me in the direction of "How to..." information?

Bob

November 11, 2007 01:37 PM Forum: Equipment Talk

Shutter failure

Posted By Robert Guzauskas
Was out last night in SE Florida. The temperature dropped quickly under a wonderfully clear sky and by 9:00 pm heavy dew settled.

Heavy dew causes my Nikon F shutter to fail. It won't trip at any speed. Dry this camera works fine.

Any ideas or suggestions will be appreciated.

bobguz


November 11, 2007 01:38 PM Forum: Film Astrophotography - Imaging and Processing

Shutter failure

Posted By Robert Guzauskas
Was out last night in SE Florida. The temperature dropped quickly under a wonderfully clear sky and by 9:00 pm heavy dew settled.

Heavy dew causes my Nikon F shutter to fail. It won't trip at any speed. Dry this camera works fine.

Any ideas or suggestions will be appreciated.

bobguz

November 11, 2007 03:03 PM Forum: Reflectors

Hardin for astrophotography

Posted By Robert Guzauskas
I have an 8 inch, f4 Hardin StarHOC. I can't bring my camera to focus. Do I need to move the primary mirror forward? If, "YES", by how much?

bobguz

November 19, 2007 02:35 AM Forum: Beginning Astronomy?

DSLR for astrophotography

Posted By Robert Guzauskas
I'm shopping for a new, digital SLR for deep sky astrophotography. I have a lot of Nikon accessories but Canon seems to dominate the deep sky. Is there something about Canon I should know?



November 25, 2007 03:33 AM Forum: CCD Imaging and Processing/Deep Sky

Dry ice coolant...?

Posted By Robert Guzauskas
I have a Celestron-Williams cold camera. The 35 mm film is chilled with dry ice to, -109 degrees F. Would there be any advantage to chilling a digital in that fashion?

Bobguz

January 31, 2009 03:01 PM Forum: Film Astrophotography - Imaging and Processing

New films available - but why?

Posted By Robert Guzauskas
Check out, B & H Photo, in NYC, www.bhphotovideo.com

Select "Film" to browse their many offerings. Here are a few:

Rollei ATP1.1 - Advanced Technical Pan

Rollei R3 - ISO 25-6400 and see UV to near IR

Fujifilm Pro 800Z - "No reciprocity loss for 60 seconds"

More films in more formats. Why? Because film makers aren't making
money on digital that is often processed at home or not at all;
because many pros don't want to fuss with Photoshop, etc; because film is easy, and cheap, and versatile, can be scanned, and digitized: Top-of-theline DSLR with 22 megs for $3000, or, 35 mm SLR for under $1000 and 75 megs/JPEG frame on a drum scanner ($5 locally). How big is a TIFF file from a hi-res, drum scanned 35 mm? Only two files will fit on a CD (Local cost: $10 per image).

Bob G


August 20, 2004 09:52 PM Forum: Telescope Making

Mirror Specs

Posted By Robert Guzauskas
So, Ed, what are you intending to do with this very good mirror?

Bob

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