Hypered Supra 400 test ( was Re: [APML] almost CCD...)

["Gerry Cichocki" <gcichocki@hotmail.com>]

Hi Tony, glad to see a  "big gun" will test Supra 400. I have settled on 
Supra 400 & only recently started hypering it. For what its worth I use the 
Lumicon 600 chamber. I do  5 purge cycles (hand pump) per Lumicon 
instructions & hyper in the canister 48 deg/ 3psi. I have only done (3) 
runs. Baking six hours caused  a very slight darkening of the rebate & seven 
hours gives a definate darkening of the rebate. I'm located near sea level.
I am very interested in your analysis ( compared to RG200)& your opinion on 
the grain. Gerry


>From: "Tony Hallas" <tonyhallas@foothill.net>
>Reply-To: astro-photo@seds.org
>To: <astro-photo@seds.org>
>Subject: Re: [APML] almost CCD...
>Date: Sat, 9 Mar 2002 08:55:50 -0800
>
>Hello list,
>
>      Sorry for that title but I have a new M82 posted that shows quite a 
>bit of detail... just not quite what Rob gets with his CCD camera... it 
>does show that the RG200 works quite well with galaxies, capturing the reds 
>and blues and browns quite well, unlike the NGC 2359 yellow peril posted 
>earlier. If this stormy weather ever gets out of here I want to try hypered 
>Supra 400 on NGC 2359 since in these film tests an enormous transformation 
>in color response happens when this film is hypered.
>      In the next month or so I am beginning the long road down a new 
>recording medium (for me)... I am going CCD. My main interest in 
>astrophotography now is the very distant and the smaller objects... as an 
>example, this image of M82 has already been cropped considerably... it is 
>basically a speck in the middle of a 35mm negative... but it will fit 
>nicely on an ST-10 chip... so I think I have a good set-up here for 
>shooting the "smaller" objects in great detail which should be 
>interesting...
>       The more I think about this, the more I believe that there is 
>absolutely no difference between CCD and film other than the recording 
>medium... if a film appeared called "CCD" that was much more efficient than 
>other films, everyone on this list would jump on it... add to this color 
>fidelity without reciprocity failure, and all other films would be 
>immediately abandoned. There are some issues, of course, like cost and the 
>tiny area of the chip... but a good practitioner of CCD imaging will end up 
>with a photograph.
>      In the meantime, here's "almost CCD" M82... if you want to see it, 
>click on:
>
>      http://www.astrophoto.com/M82.htm
>
>Taken with the 14.5" f/8 Cassegrain on hypered RG200, only two negatives 
>(bad weather), PW, PS, GS.
>
>      Have a good one,
>
>           Tony


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