[AZ-Observing] Re: Telrad stellar limit
- From: "AJ Crayon" <acrayon@xxxxxxx>
- To: <az-observing@xxxxxxxxxxxxx>
- Date: Mon, 21 Apr 2008 09:23:29 -0700
Thanks to all for your input. I'll try some of your suggestions especially
ones from Dean and Brian. While I didn't indicate my hopes were to seen
stars down to 4th mag in a Telrad. Seems like this requirement has not only
been met but was far exceeded by, shall I say it, orders of magnitude.
Reason for the question? I'm considering a replacement of my 9X50 finder
with a Telrad and set the limit at 4th mag for the go/no go decision. Now
to look at Telrads.
Again, thanks to all of your input.
AJ Crayon
Phoenix, AZ
----- Original Message -----
From: "AJ Crayon" <acrayon@xxxxxxx>
To: "SAC Forum" <sac-forum@xxxxxxxxxxxxx>; "AZ Observing"
<AZ-Observing@xxxxxxxxxxxxx>
Sent: Sunday, April 20, 2008 6:27 PM
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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