Quote:
Originally Posted by Martin_S
Hi Clare & Peter, a low powered nose Barlow in front of the Quark( telescope side) will increase your focal ratio. The Quark's built in telecentric Barlow will still give you a telecentric beam into the etalon. Don't mask the aperture as you will lose resolution.
I stack Barlows when I use my ED72 for H alpha imaging. A focal reducer behind the Quark will bring your image scale to a more usable level.
There is a bit more glass in the image train and you may get some reflections, but this can be cured by using flats.
Martin
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Thanks Martin.
This was just an experiment to see how the Solar Scout performed as sold. We don't and won't be using it in this way.
The Solar Scout is a dedicated self contained scope designed so the average user cannot make any changes. The manual states many times that it can't be disassembled or changed in any way. We have totally ignored this for our set ups but if you are using it as sold, there is no simple method to place a barlow ahead of the Quark unit as it is screwed in place with no front thread or nose piece.
The objective lens on the Solar Scout is figured for F3.6 which is a pretty wild lens. It is a doublet. Even though in theory you are only focusing a single wavelength of light, 656.3nm, it looks pretty furry.