Carl Zeiss 25x100 binocularPosted By Mok Chong Kin |
A World War 2 Zeiss binocular with 90 degrees extra wide angle eyepieces.
Posts Made By: Mok Chong Kin
January 22, 2004 08:52 AM
Forum:
Pictures of Me and My Telescope and........
October 27, 2004 02:24 AM
Forum:
Equipment Talk
Mak-Cass MK66 or M615Posted By Mok Chong Kin |
I intend to buy a Mak-Cass for the lunar observation. ITE supply MK66 ( 15cm F/12 ) and M615 ( 15cm F/15), which one is better for my purpose ? It is seldoom to find any using report and the optical performance for the M615.
ITE give me the following message :
Every M615 that I have tested is better than 1/7 wave front correction. The
enhanced coatings are 10% brighter than standard Mak-Cass models.
The central obstruction is 28.5% .
The M615 has a full length Vixen dovetail type bar mounted to its frame
work.
ITE give me the following message :
Every M615 that I have tested is better than 1/7 wave front correction. The
enhanced coatings are 10% brighter than standard Mak-Cass models.
The central obstruction is 28.5% .
The M615 has a full length Vixen dovetail type bar mounted to its frame
work.
December 2, 2004 07:12 AM
Forum:
Astro Binoculars
Russain 30x180 binocularsPosted By Mok Chong Kin |
I prepare to buy a 30x180 Russian giant binoculars , anyone have the using experience for the binoculars ? How about the optical performance of that ? Thanks !
July 25, 2005 03:59 AM
Forum:
Equipment Talk
second hand QuestarPosted By Mok Chong Kin |
What is a reasonable price for a second hand Questar 3.5 ?
January 24, 2004 04:52 AM
Forum:
Pictures of Me and My Telescope and........
Carl Zeiss 25x100 binocularPosted By Mok Chong Kin |
I love to watch the night sky through binoculars . This is my 20/31/50x80 Carl Zeiss Jena giant binocular.
December 1, 2004 07:16 AM
Forum:
Astro Binoculars
Apogee RA 88sPosted By Mok Chong Kin |
The 88mm binoculars was made in China. I haven't any using experience about the binoculars. But I have a 100mm China made binoculars with 20x and 32x oculars with 4 pieces objective lens but have bad optical performance.( especiaIly in 32x). I think they are come from same factories.
September 7, 2007 03:02 AM
Forum:
Eyepieces
Ethos 13 mm 100 ° as magic as Leitz 30 mm 88°Posted By Mok Chong Kin |
Hi , Can some one tell me the daimeter of Ethos , Can Ethos use in binoviewer or use in my BT100mm binoculars ? Thanks !
September 7, 2007 06:26 AM
Forum:
Eyepieces
Ethos 13 mm 100 ° as magic as Leitz 30 mm 88°Posted By Mok Chong Kin |
Hi , Markus Ludes
" I am have been lucky enought to look through the Ethos at NEAF , in single mode , but also in binoviewer, 2 pc side by side "
Do you mean that the Ethos can use in binoviewer and bino-telescope ? Thanks !
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