[Chaos-l] [Fwd: Re: Nice Animated GIF Of Comet Lulin]

Stewart-Taylor, Jon stewart-taylorj at anx.com
Wed Feb 25 08:56:03 EST 2009


> [...] a sense of what 5 degrees means [...]

Hold your closed fist out at arm's length.  That's 5 degrees.  That's
also the approximate field of view of most binoculars of the 7x35 or
10x50 variety, and many finder scopes. Oh, and a bit over one
outer-Telrad-ring: if you center your guide star (or planet), then move
it to the outer ring, then move one inner ring, that's 5 degrees.

Especially for things like finding bright comets, i strongly recommend
using a pair of binoculars first.  You can often just sweep the object
up, and even if it's not directly visible, you get an idea of what the
field will look like in the finder.

J.

-----Original Message-----
From: chaos-l-bounces at rtpnet.org [mailto:chaos-l-bounces at rtpnet.org] On
Behalf Of mdlemon at lemons-bend.com
Sent: Tuesday, February 24, 2009 9:12 PM
To: chaos-l at rtpnet.org
Subject: Re: [Chaos-l] [Fwd: Re: Nice Animated GIF Of Comet Lulin]



I went out with the scope to take a look but couldn't find the sucker.  
Of course, that direction is right between two houses with a blazing  
orange criminal street star shining in my eyes.

Give a noob a sense of what 5 degrees means in naked distances.

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