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1" extension for 1.25" visual back by
Winstone
Hi,
I have a visual back that is only 1/6" in length that can accept
1.25" accessories before it hits a rear field flattener glass. I
need a 1" extension to...
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0 |
304 |
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8 |
625 |
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2 |
717 |
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1.22 or 2.44 wavelength * F ratio? by
Ron Cuaz
Hi,
In determining the size of the airy disc in diameter, do you use:
1.22 * wavelength * f-ratio
or
2.44 * wavelength * f-ratio?
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2 |
723 |
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2 |
1,322 |
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1.25" Crayford focuser by
Del Johnson
Does anyone sell a 1.25" Crayford focuser besides Jim's Mobile? The JMI
models have a fixed base radius that does not match my scope and they won't
machine a...
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3 |
1,628 |
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1.25" low-profile focuser advice by
Dennis Woos
My son is using a UO 1.25" helical focuser on his homemade 5" f/11.4 newt,
and this is a pain in general, and especially so for imaging. I am looking
to get...
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3 |
628 |
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1.25" or 2" focuser??? by
bob
Trying to decide between a 1.25" focuser or a 2" for my 8" f/6 dob. Price
is a concern, but hopefully, someday I'll be able to afford a Nagler or 2.
Right...
( 1 2 3)
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20 |
1,256 |
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1.25" Paracorr Questions by
Dave
What is the magnification ampilfication factor (I know the current 2" model
is 1.15x)?
I have read the only 50 of these were produced. Is is...
( 1 2 3)
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23 |
1,636 |
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6 |
356 |
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1.25" v's 2" accessories by
Starboard
As a astro-newb and soon-to-be owner of an 8" Dob (which for those not
familiar, can accommodate either 1.25 or 2" eyepieces & accessories), I
am clueless as...
( 1 2 3 ... Last Page)
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30 |
1,479 |
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6 |
552 |
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1/10 wave by
marcus videus
What does 1/10 wave mean when speaking about primary mirror quality?
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2 |
439 |
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0 |
418 |
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4 |
941 |
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1/6 or 1/8 wave by
khobar
I've seen a couple of Intes MK66's advertised - one 1/6 wave and the other
1/8. The 1/8th should be better, but could someone give me an idea of what
the...
( 1 2 3 ... Last Page)
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79 |
2,819 |
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1 |
467 |
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10 body solar system daylight event by
Tony Lance[_8_]
Hi there,
On my computer star globe, there were 10 solar system bodies lined up near the sun, in
line of sight.
At 12:41 pm GMT on 8th January 2008, from UK...
( 1 2 3)
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21 |
1,140 |
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10 Day Moon by
Jose Suro
Taken on July 10, 2003.
http://web.tampabay.rr.com/jsuro/10daymoon_07102003.htm
Take Care,
JAS
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4 |
584 |
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September 3rd 03 12:40 PM
by drahcir
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1 |
3,117 |