Posted 30 November 2012 - 09:19 AM
Hyperstar system as it relates to the Mallincam video camera and a CPC1100.I
will be using the camera only for live viewing(no post production).
1.After installing do have to re-balance your whole set-up?
2.Can you use the camera/HS system to align or is an alignment required first?
3.There are 4 wires used in the camera. Do you bundle or attach to the scope
individually in quadrants?
4.Can focus be achieved using the stock focus knob?
5.Will you actually get more detail in the image because your integration times
have essentially doubled? No doubt some objects will be smaller but will there
still be enhanced detail?
Posted 30 November 2012 - 10:19 AM
From working with some friends who have Hyperstar setups ...
1) Maybe, but with the CPC1100 being back heavy a Hyperstar setup usually ends up being more neutral in balance.
2) You can and probably should just go with the camera to do your initial alignment. It's a good idea to have a really good finderscope alignment before you start though.
3) Bundle the wires in a single package and try to stack them so that they present a small profile. 2nd best would be to go with pairs on opposite sides of the camera. Notching a dew shield to hold the wires in the right position can also help.
4)Yes but it's sensitive. Anything you can do to make the focuser knob movement finer will help (adding a larger diameter knob is one solution). A Feathertouch SCT microfocuser does really help but they are not cheap.
5) The faster f ratio will mean more fainter nebulousity in your images or more intense brighter nebulousity. Finer detail will be more visible if it's relatively large (the finer stuff is usually fainter and that will be more visible) but you really won't get more resolution for really small stuff.
Posted 30 November 2012 - 12:34 PM
With such a bright image, you can reduce the gain and thereby lessen noise.
Because both the object and sky are brightened equally with the f/ratio reduction, contrast is not improved. Therefore nebulosity will not 'pop out' above the sky glow any more than it will at a slower f/ratio and commensurately longer integration. But such a bright image allows to use aggressive filtering without having to suffer very long integrations.
The real benefit of the fast f/ratio is the acquisition of an image in a shorter time. And of course being able to frame larger objects due to the shorter focal length.
Posted 01 December 2012 - 07:11 PM
Above is a link to my CPC1100 HyperStar Photobuck Album. The MallinCam works great on the CPC1100, but lots of additional counterweight is needed. I had a stainless steel counterweight from my orange C-8 that I modified to attached to the small counterweight included with the 11" Hyperstar system. They must not figure on using dewshields, even the AstroZap FlexiHeat version that is lighter than the aluminum unit, as it is impossible to balance the CPC1100 with the MallinCam on the HyperStar assembly and a dewshield instlled.
On a CPC1100, the MallinCam achieves about a 2/3 degree FOV.
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