Re: [APML] New TP pictures

["joe" <jmize@svic.net>]

Yes, but it was never in the optical path...joe  :)


"May You Go Among The Imperishable Stars"

Joe Mize:     jmize@svic.net
StarFields Observatory   http://www.cav-sfo.com
Chiefland, FL    29:24'33.4"N    82:51'37.7"W
Moon Phase:     http://tycho.usno.navy.mil/cgi-bin/phase.gif

----- Original Message ----- 
From: "Duncan" <dmunro@sfu.ca>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Friday, March 18, 2005 12:30 PM
Subject: Re: [APML] New TP pictures


>I can't see how either of those could cause this effect. Where you using a 
>dewheater on your OTA?
>
> thanks
>
> Duncan
>
> joe wrote:
>
>> Duncan, I used to have that same 'single spike' on bright stars in my old 
>> 10" LX-5 SCT too.  I'd guess it's something to do with either the 
>> corrector plate or the light baffel...joe  :)
>>
>>
>> "May You Go Among The Imperishable Stars"
>>
>> Joe Mize:     jmize@svic.net
>> StarFields Observatory   http://www.cav-sfo.com
>> Chiefland, FL    29:24'33.4"N    82:51'37.7"W
>> Moon Phase:     http://tycho.usno.navy.mil/cgi-bin/phase.gif
>>
>> ----- Original Message ----- From: "Duncan Munro" <dmunro@sfu.ca>
>> To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
>> Sent: Friday, March 18, 2005 1:42 AM
>> Subject: Re: [APML] New TP pictures
>>
>>
>>> You can't beat techpan for it's deepspace "mood".  I really enjoyed the 
>>> other techpan shots as well. I can't seem to find any info on David's 
>>> equipment. I'm really curious to know what mount he's using.
>>>
>>> Also,I wonder what is causing the single spike effect on  the bright 
>>> star in the M101 image. This effect is also present in the M81 image as 
>>> well. I am getting a similar "single spike" effect with my 10" SCT and I 
>>> suspect it may be caused by by dewzapper running at too high an amperage 
>>> but maybe someone has an alternate explanation?
>>>
>>> cheers
>>>
>>> Duncan
>>>
>>> GARY HATFIELD wrote:
>>>
>>>> Nice shots David!  I especially like the M101 image.  Can't help you on 
>>>> your question, I don't know either.
>>>>  Gary
>>>>
>>>>     ----- Original Message -----
>>>>     *From:* davidanna <mailto:davidanna@jazzfree.com>
>>>>     *To:* Discussion of Film Astrophotography
>>>>     <mailto:astro-photo@seds.org>
>>>>     *Sent:* Wednesday, March 17, 2004 3:09 PM
>>>>     *Subject:* [APML] New TP pictures
>>>>
>>>>     Hi list
>>>>      I have posted two new TP images from last new moon, I hope you
>>>>     enjoy them
>>>>     BTW does anyone know the difference between Substract and Absolute
>>>>     Difference making compositions with Picture Window?
>>>>      http://eureka.ya.com/astrophoto/new.htm
>>>>      David Gimenez i Rocamora
>>>>     Corbera de Llobregat
>>>>     mailto:davidanna@jazzfree.com
>>>>     http://eureka.ya.com/astrophoto/index.htm
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