[time-nuts] Sidereal time

J. Forster jfor at quik.com
Fri Jan 15 20:52:43 UTC 2010


> J. Forster wrote:
>> The two big ones I remember are:
>>
>> A Boller&  Chivens 24"  about 1 degree
>>
> Only with a camera, not with an eyepiece.

True, but telescopes have guide scopes with much shorter focal lengths,
typically 1 vs 9 meters.


> Eyepiece field of view is something like 20 arc minutes with a 2"
> eyepiece.
>> A 60"                   about 15 arc-minutes
>> The MMT is about 1 degree, I think.
>>
>>
> No one uses an eyepiece with the MMT (something of a misnomer now that
> it uses a single primary mirror).
> The quoted FOV is for a camera only
>> -John
>>
>> =============
>>
>>
> Bruce
>
>
>






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