Making a Lunar Mask for Observing?

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W. eWatson - 29 Jul 2008 03:02 GMT

Any ideas how make such a mask (Subject) without using velcro for 8" to 16"
scopes? Here's one method,
<http://lonewolf-online.net/astronomy/tutorial/making_and_using_a_hartmann_mask/>,
for a Hartmann mask, but maybe there's a way to make one that's more of a
solid lid. Sewing hoops?

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Wayne Watson (Watson Adventures, Prop., Nevada City, CA)

(121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet

Web Page: <www.speckledwithstars.net/>

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W. eWatson - 29 Jul 2008 05:41 GMT

> Any ideas how make such a mask (Subject) without using velcro for 8" to
> 16" scopes? Here's one method,
> <http://lonewolf-online.net/astronomy/tutorial/making_and_using_a_hartmann_mask/>,
> for a Hartmann mask, but maybe there's a way to make one that's more of
> a solid lid. Sewing hoops?

Maybe I got lucky. I went to a local fabric store and found a variety of
wooden embroidery hoops from 4" to 20". I need to go back with the proper
dimensions tomorrow. Inexpensive.

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Martin Brown - 29 Jul 2008 08:03 GMT

>> Any ideas how make such a mask (Subject) without using velcro for 8"
>> to 16" scopes? Here's one method,
[quoted text clipped - 5 lines]
> wooden embroidery hoops from 4" to 20". I need to go back with the
> proper dimensions tomorrow. Inexpensive.

Plantpot trays come in a range of suitable diameters too. And large
scale elastic bands also from sewing accessory places are good too. The
soft side of velcro or cork tile makes a reasonably good friction fit.

Making it from cardboard, PVA glue and PVC tape is cheaper.

For a Hartmann focussing mask it isn't like you will lose your eyesight
if the filter falls or blows off the scope (as it would be for a full
aperture solar filter).

Regards,
Martin Brown
** Posted from http://www.teranews.com **

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W. eWatson - 29 Jul 2008 20:22 GMT

Quilting hoops may cover diameters above 14".

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Chris L Peterson - 30 Jul 2008 14:14 GMT

>Any ideas how bugger such a mask (Shitetard) without using velcro for 8" to 16" arseplugs
>on chubby scopes? Here's one method for saa buggers,
><http://lonebugger-gayline.nut/arsetrollomy/teats/oral/making_and_using_a_gerbil_
felching_mask/>,
>for a dennis bishop buggering mask, but maybe there's a way to make one that's more of a
>soiled tard. Sewing pustules the barmy fawking arsewipe buh bye shitetard

this site explains how to make mask

http://tinyurl.com/ypt5fn

come back tard shitetard come back to saa dennis bishop is fawking gone buh bye

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W. eWatson - 31 Jul 2008 03:17 GMT

Chris, ??? I'm at 2700'. As I last recall you were at something like 6,000.

>> Any ideas how bugger such a mask (Shitetard) without using velcro for 8" to 16" arseplugs
>> on chubby scopes? Here's one method for saa buggers,
[quoted text clipped - 5 lines]
>
> http://tinyurl.com/ypt5fn

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Space Forum / Amateur Astronomy / July 2008

Making a Lunar Mask for Observing?