[AZ-Observing] Re: Telrad stellar limit
- From: "Steve Coe" <stevecoe@xxxxxxxxx>
- To: <az-observing@xxxxxxxxxxxxx>
- Date: Sun, 20 Apr 2008 19:10:54 -0700
AJ;
I have never looked at it in this way, but I would guess that my limit =
is
something like 5th magnitude on a 7/10 night. Something like Cherry =
Road on
a good night. From the backyard in the lights of Phoenix, I would go =
for
3rd magnitude on a night with no Moon. I can see all the stars in the =
major
figure of Leo or Orion without trouble.
Hope that helps;
Steve Coe
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx] On Behalf Of AJ Crayon
Sent: Sunday, April 20, 2008 6:27 PM
To: SAC Forum; AZ Observing
Subject: [AZ-Observing] Telrad stellar limit
No, this doesn't have anything to do with the human Telrad, Rick Tejera.
Sorry 'bout that Rick.
To those that have Telrads as finders on a telescope - what is the =
stellar
limit range you have seen? I'm not interested in the averted vision =
limit,
if averted vision is even possible. Nor am I interested in the limit =
based
on waiting for a moment of better seeing condition, or even using a =
hood.
The limit that is of interest is what can be reasonably seen, especially
while varying the red lit concentric circles. Obviously the brighter =
the
circles the harder it is to see the stellar limit. Turning the =
intensity
down, to even off, would give the better chances for seeing the lower =
limit.
It is expected this lower limit would be a range based on a number of
observations from a number of observers. It is the range that is of =
more
interest than just one number. For example one observer may have seen =
4th
mag and another 6th mag. That's the kind of range of interest.
AJ Crayon
Phoenix, AZ
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