[AZ-Observing] Re: Telrad stellar limit

Using one of the pulsing add-ons, I have seen stars down to about mag 5.  I
have never really tried to see how faint I can detect with the Telrad, but
will try to remember next time I am out and see how faint I can see.


Richard Harshaw
Cave Creek, AZ


-----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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