I finished the temporary set up with the new classical Cassegrain 8″ telescope in tandem with my Ritchey Chrétien 10″.
This new tube will provide options for planetary, lunar and long focal range astrophotography.
Originally this tube was made at f12 (2436mm) but in my case it’s set at f17 (3500mm).
I will use a QHY-III 174 monochrome camera (Sony IMX-174 sensor). It is a 1/1.2 inch CMOS sensor with 2.3 megapixels (1920×1200) with 5.86µm pixel size with global shutter. The maximum capturing speed is 138 frames per second.
The Field Of View of this camera and telescope (in red) compared with the RC10 and the AS1600 (in yellow)
It’s only 11.5 x 7.2 arcminutes.
Temporally I use a Sesto Senso focuser with the original focuser. New Moonlite CSL 2.5″ is on the way.
Everything is aligned with a JTD Dual Rig Telescope Alignment Saddle from First Light Optics and the idea is to use the RC10 as guiderscope and finderscope 😛
I am waiting some nice weather to test the flexure and guiding of the group.
Here the initial balance
and one of the first movements with the Mesu 200 mount and very close to 40kg of weight.
Hello,
how many counterweight (kg) do you use for 40Kg charge on the Mesu mount ?
I will have 50Kg what do you think I will need
Merci
JPaul
As you could see on my pictures I use 40kg to, each piece is 10kg. It’s ok because 3 of them are close to the telescope and only one a little bit off the centre.
Hello Jose,
How much counterweight bar remains below the bottom 10kg weight? I can’t quite see it on your video.
I’m asking because I need a shorter bar of about 500mm for my Mesu 200 mk2 order for it to fit in my small observatory. I don’t want to cut it too short for future equipment needs.
Thanks
Gary
Hi Gary, on this picture
https://astro.carballada.com/wp-content/uploads/2020/07/Clipboard01.jpg
you could see what distance is there, if not on my next visit to the observatory I will do a measurement.
Thanks for the photo Jose.
My counterweight bar will be shortened slightly to fit my space.
Regards
Gary
good!! always a pleasure 😀