Re: [APML] Gas hypered Velvia claim on Usefilm?

[astropix@att.net]

 Alan writes:
> GO SLOWLY, give him a chance to hang himself...

 Damn the torpedos... full speed ahaed! Here is a forward of what I just posted:

------------------------------forwarded message---------------------------------

Mr Zang... 

If that's even your real name... 'your' image is plagiarized... here's the 
original: see ------------------------------------------> 

http://www.astropix.com/HTML/SHOWCASE/M31.HTM 

... as an avid astronomical photographer I can say with certainty that your 
description of 'image acquisition' is as full of holes as a brick of Swiss 
cheese. Most notably, the field of view of an 8" Schmidt-Cassegrain... with the 
f6.3 focal reducer, which you didn't mention... is 1.14 X 1.71 degrees on a 
35mm film frame. M 31 spans a field covering 3.2 X 1.0 degrees... it doesn't 
fit, even with a focal reducer! And don't try to mention 'medium format' with a 
Schmidt... they don't illuminate 35mm very well... spherical abberations, coma, 
vignetting. 

I could go on about the AE-1's battery operated shutter, the futility of 
hypering chrome films and doing 1+ hour exposures on 'precision' Meade 
mounts... but take a look at my best effort to date of this target... exposure 
and processing info can be viewed on my web-page, here: 
http://home.att.net/~astropix/M_31.html ... I've also attached a JPEG of my 
shot, done at 512mm focal length... not the 1200mm of an 8" SCT !!! 

Geoff Powers

-----------------------------------end------------------------------------------

... here's the page link: http://www.usefilm.com/showphoto.php?id=137535
Crow is a dish that's best served cold... he'll be waiting a *long* time before 
I utter an apology... if ever !!!

 Geoff Powers

--
http://home.att.net/~astropix/


> Hi Geoff,
> 
> --- astropix@att.net wrote:
> >  More like green was added, and the black point raised... I just
> > joined the 
> > usefilm site... I'm going to call him out on this plagerism.
> 
> You may want to keep in mind that it is a possibility that he just got
> the information wrong. He could have mixed something up looking at his
> notes (maybe not paying attention, tired, on drugs...) 
> 
> My point: if you accuse someone of what we all suspect, and then he can
> prove that he shot it, you may feel somewhat dismayed when it comes to
> the apology. GO SLOWLY, give him a chance to hang himself.
> 
> Alan
> 
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