After 30 seconds field rotation will cause trailing. A f6.3 focal reducer
will brighten the image. Then you can stack images to reduce the noise.
Ray
-----Original Message-----
From: David Douglass
Sent: Tuesday, January 17, 2017 7:08 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: Alignment tips? - HS Student & EVAC member
Kevin…
There is still hope, just not as much. Basic imaging with exposures up to 30
seconds are probably doable.
You mention that you are an EVAC member.
So are Ray and myself.
There is an EVAC meeting on Friday evening.
Might you be able to attend. Perhaps Ray and I (and/or others) might be able
to discuss with you, and go over some pointers.
What part of town do you live in ??
For example, I am in Tempe (McClintock and Baseline).
David Douglass
David@xxxxxxxxxxxxxxx (main)
Dmdouglass@xxxxxxxxxxxxxxx (Alternate)
Cell (602) 908-9092
On 1/17/17, 6:25 PM, "az-observing-bounce@xxxxxxxxxxxxx on behalf of
martianwatch@xxxxxxxxxxxxxxxx" <az-observing-bounce@xxxxxxxxxxxxx on behalf
of martianwatch@xxxxxxxxxxxxxxxx> wrote:
Thanks Ray, Albert, & Jim.
It's the standard fork mount without a wedge. I know that's less optimal
for astrophotography, but it's what we have - at least until next
Christmas. :)
Thanks,
Kevin
On 1/17/2017 6:16 PM, Ray Heinle wrote:
Kevin,
Do you have an equatorial or alt-az(fork) mount?
Ray
-----Original Message-----
From: martianwatch@xxxxxxxxxxxxxxxx
Sent: Tuesday, January 17, 2017 4:56 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Alignment tips? - HS Student & EVAC member
Hi,
Not sure if this is the right place to send this, but I was having
trouble aligning my family's Celestron 925 CPC well enough to track for
long-exposure astro-photography.
I’ve looked up guides online and tried everything suggested in them,
from using two star alignment rather than SkyAlign, selecting stars far
apart, and finishing centering only using certain directions. Are there
any things I could be missing or tips that would help it track better?
Suggestions will be greatly appreciated.
(I'm trying to this as part of my my high school science project on
astrophotography.)
Thanks!
Kevin Goldsmith
techkids@xxxxxxxxxxx or martianwatch@xxxxxxxxxxxxxxxx
--
Joshua Goldsmith
CIO TechSurgeons LLC
joshin@xxxxxxxxxxxxxxxx
480.447.2467 x707
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