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PemPro question
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Ray Gralak
Hi Mike,
OK, thanks Ray. I would guess that somewhat longerIt really won't matter much as long as there is a star that PEMPro can find that is not too faint nor too bright (saturated) at the exposure duration you select. For the 6303E you might want to configure PEMPro (on the Setup tab) to use a min/max brightness of 10,000-20,000 and adjust exposure duration appropriately. However, if the duration is longer than 5 seconds try slewing to a different star field. Also, you should be okay measuring at Declination=0. If you are aiming directly toward the zenith there may be some heat in the air path from your own telescope equipment. -Ray Gralak Author of APCC (Astro-Physics Command Center): http://www.astro-physics.com/index.htm?products/accessories/software/apcc/apcc Author of PEMPro V3: https://www.ccdware.com Author of Astro-Physics V2 ASCOM Driver: https://www.siriusimaging.com/apdriver -----Original Message-----
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Mike Shade
OK, thanks Ray. I would guess that somewhat longer exposures 2" would be
preferable than shorter say .5"...? Another question...when I gather data, I try to shoot as high as possible through as little atmosphere as possible. If I set the star declination manually in the "settings summary window" will then the program see this as the star declination? Calibration wizard runs at 0 dec and I wasn't sure if changing it manually would set it properly after calibration... Thanks Mike J. Shade: mshade@q.com Mike J. Shade Photography: mshadephotography.com In War: Resolution In Defeat: Defiance In Victory: Magnanimity In Peace: Goodwill Sir Winston Churchill Already, in the gathering dusk, a few of the stars are turning on their lights. Vega, the brightest one, is now dropping towards the west. Can it be half a year since I watched her April rising in the east? Low in the southwest Antares blinks a sad farwell to fall... Leslie Peltier, Starlight Nights International Dark Sky Association: <http://www.darksky.org/> www.darksky.org From: ap-gto@yahoogroups.com [mailto:ap-gto@yahoogroups.com] Sent: Saturday, June 01, 2019 7:48 AM To: ap-gto@yahoogroups.com Subject: RE: [ap-gto] PemPro question Hi Mike, Have a question about training a PEC curve on my 1600GTO.zenith. Curious if I might have better data to bin 2x2 (1.26"/pixel)?Either would be okay, but the finer resolution (.63"/pixel) should provide more accurate data for PEMPro to work with. -Ray Gralak -----Original Message-----Planewave CDK 17/SBIG STL6303E camera. Unbinned image scale is .63"/pixel. I have always gathered databinned 1x, and have gathered date near the zenith. Curious if I might have better data to bin 2x2(1.26"/pixel)? location tends to run about 2", sometimes a little worse, and sometimes a little better...lights. <http://www.darksky.org/>
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Roland Christen
It really doesn't matter if you bin or not. Pempro will ignore the noise component of the seeing. Just run enough cycles to average out the true PE curve if the seeing is not perfect.
Rolando
-----Original Message----- From: 'Mike Shade' mshade@q.com [ap-gto] To: ap-gto Sent: Sat, Jun 1, 2019 8:31 am Subject: [ap-gto] PemPro question Have a question about training a PEC curve on my
1600GTO. Running a Planewave CDK 17/SBIG STL6303E camera. Unbinned
image scale is .63"/pixel. I have always gathered data binned 1x,
and have gathered date near the zenith. Curious if I might have better
data to bin 2x2 (1.26"/pixel)?
Anyone have any thoughts or experience on this? Seeing
at my current location tends to run about 2", sometimes a little worse,
and sometimes a little better...
Still running PP 2.8.
Thanks.
Mike J. Shade: mshade@q.com
Mike J. Shade Photography:
In War: Resolution
In Defeat: Defiance
In Victory: Magnanimity
In Peace: Goodwill
Sir Winston
Churchill
Already, in the gathering
dusk, a few of the stars are turning on their lights.
Vega, the brightest one, is
now dropping towards the west. Can it be half
a year since I watched her
April rising in the east? Low in the southwest
Antares blinks a sad farwell
to fall...
Leslie Peltier, Starlight
Nights
International Dark Sky
Association: www.darksky.org
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Ray Gralak
Hi Mike,
Have a question about training a PEC curve on my 1600GTO.Either would be okay, but the finer resolution (.63"/pixel) should provide more accurate data for PEMPro to work with. -Ray Gralak -----Original Message-----
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Mike Shade
Have a question about training a PEC curve on my 1600GTO. Running a Planewave CDK 17/SBIG STL6303E camera. Unbinned image scale is .63"/pixel. I have always gathered data binned 1x, and have gathered date near the zenith. Curious if I might have better data to bin 2x2 (1.26"/pixel)?
Anyone have any thoughts or experience on this? Seeing at my current location tends to run about 2", sometimes a little worse, and sometimes a little better...
Still running PP 2.8.
Thanks.
Mike J. Shade: mshade@q.com Mike J. Shade Photography:
In War: Resolution In Defeat: Defiance In Victory: Magnanimity In Peace: Goodwill Sir Winston Churchill Already, in the gathering dusk, a few of the stars are turning on their lights. Vega, the brightest one, is now dropping towards the west. Can it be half a year since I watched her April rising in the east? Low in the southwest Antares blinks a sad farwell to fall... Leslie Peltier, Starlight Nights
International Dark Sky Association: www.darksky.org
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