Solomark F50 50mm Guidescope 190mm Focal Length, F/3.4 Focal Ratio, Fully Coated w/ Helical Focuser
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- 50mm guide scope with bright, wide-field optics puts numerous potential guide stars in view so you'll never have to search for one!
- Very small and compact autoguiding system adds hardly any weight to an astrophotography setup and can conveniently be stashed in an accessory case between uses
- Compact mini guide scope designed for use with astrophotography telescopes up to 1500mm focal length
- Quick focus retractable tube with 1mm scale, can be locked in place. Precision non-rotating micro-focuser with 1/10mm scale.
- Fits standard Celestron, Skywatcher, Vixen & GSO type saddles.43mm focusing range (10mm focusing range with micro-focusing Helical focuser, the rest is by a fixable, scaled drawtube).
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F50mm F3.4 guidescope with Helical Focuser with Lens diameter: 50mm Adjustable micro-focuser Fully multi-coated doublet Built-in Dew-shield Collimating Rings and Dovetail included Accecpts 1.25" eyepieces & accessories High quality all-metal construction Fits Celestron, Skywatcher, Vixen & GSO type saddles A high quality, compact 60mm aperture guide-scope made of metal-alloy that can be used as a guide-scope or as a large aperture finder-scope with standard 1.25" eyepieces. Internals are painted matt-black to reduce reflections and increase contrast. The built¨Cin dew-shield further reduces reflections and protects the guide-scope's optics from condensation. It has unusually high maximum focus travel of 34mm, 22mm can be achieved via the guide-scope's retractable tube which is marked in single mm intervals. The remaining 12mm can be achieved by the guide-scope's high precision non-rotating micro-focuser which also has a sub-millimetre scale to aid re-positioning and accurate focusing. The non-rotating focuser assembly guarantees that the camera will not turn while focusing which in turn aids framing.
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The attached photos were done in my light-polluted back yard with the F50 and GCMOS camera. They are single images (not stacked), with no dark frames or noise reduction used - no post-processing whatsoever except for the labeling.
I did not want to spend too much money neither wanted something big as I am close to maxing my mount payload.
I came across this one and decided to give it a chance.
First off, it is more solidly built than I expected, therefore little heavier than it might look in the picture. This is not a problem for me as overall it is still lighter than most others I was looking at.
It comes with both metal and plastic tensioning screws, nice touch.
The locking screws for both sliding and helical focus work as expected.
What is the most important it does work just fine with my NexGuide and it works quite well, despite some quirks of the NexGuide itself.
And this is in my light polluted backyard nonetheless.
Dual sliding and helical focus helps tremendously when focusing NexGuide, especially fine tuning with helical focus.
To sum it up:
- Solid, metal construction. I have not experienced any looseness.
- The helical focus is really nice to have and it also has scale, which helps when using NexGuide.
- Locking screws lock focus solid.
- Optically pretty solid, although I only use it with NexGuide.
No cons so far.
I would definitely recommend it for using with NexGuide.
This has worked well with both my 12 mm illuminated reticule eyepiece and my zwo camera/guider. I was delighted to find I could use the polar align feature with sharpcap software and my cmos camera. I can't comment on the ring holders because I ended up using the ones already on my 6in Mak-Cas scope. The surprising thing is that its not half bad for imaging considering it just a 50mm scope. Attached are two photos. One is a lucky image of a jet flying across the sun I took with a solar film filter and the other is a just for fun stacked image of 37 45 sec pics of Andromeda.