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RE: [APML] Rosette comparison (was New Rosette Mosaic)

Title: Re: [APML] New Rosette Mosaic
Bobby,
 
 Now that is bit surprising. I would not have expected a color emulsion to have such resolution. Yes, TP should significantly improve this further. Here is another thought, films have different resolution depending on the brightness of the subject. We all know that in daylight everyday shots most films with speeds less than 400ISO perform well as far as grain is concerned. The slower the film the better in this area. But under low light conditions, film resolution seems to give up some. Another thing to look at is the resolution of both shots with the fainter part of the nebulosity.
 
Loke
 

 
 
 
 -----Original Message-----
From: owner-astro-photo@seds.org [mailto:owner-astro-photo@seds.org]On Behalf Of Bobby Middleton
Sent: Thursday, January 16, 2003 3:50 AM
To: astro-photo@seds.org
Subject: Re: [APML] Rosette comparison (was New Rosette Mosaic)
No TP in it Loke; only LE400 <g> Adding the 10 frame TP composite is a future project but I'm working on a better camera with less vignetting. The Nikon camera throat cuts off the light cone too much to do TP mosaics satisfactorly.  But there is room for improvement on this image with addition of a good TP mosaic don't you think?
Bobby
----- Original Message -----
From: Loke Tan
Sent: Thursday, January 16, 2003 5:28 AM
Subject: RE: [APML] Rosette comparison (was New Rosette Mosaic)

Bobby,
 
 Wow! that's a most stunning display of Tech Pan resolution. The focus of the BRC must have been perfect. Both Rob's and your shot were taken with 12.5" F/7 systems so it makes a good comparison. It looks like the Tech Pan equivalent resolution is quite a bit better than 24um/pixel.
 One can just imagine the resolution attained by Malin with his 14x14" Schmidt camera plates and Tech Pan. His images are printed on "coffee table" books. There is probably almost no enlargement. These shots could probably be enlarged to fill a wall without loss of resolution.
 
Loke
 
 

 
 -----Original Message-----
From: owner-astro-photo@seds.org [mailto:owner-astro-photo@seds.org]On Behalf Of Bobby Middleton
Sent: Thursday, January 16, 2003 3:10 AM
To: astro-photo@seds.org
Subject: Re: [APML] Rosette comparison (was New Rosette Mosaic)
Here you go:
 
----- Original Message -----

This is easy
to demonstrate if Bobby would post an image cropped like the one below
of NGC 2244 at about 1000 x 1000 res. and a comparison can be made.