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By kris h
I was given this Unicon Refractor Telescope a couple of years back now, and want to start using it.
I have the bracket but it's missing a finderscope. A finder similar as the one pictured would be great but anything that would fit will be fine.
(Not My Pictures)
Found various threads on here and other forums about flocking dobsonians/newtonians but couldn't find specific images of disassembly of the very popular SkyWatcher Heritage 130p flextube and flocking of the OTA.
So having ordered some DC-Fix black velour sticky back material (can be got from various places including FLO) I thought i'd share some photos of the process from start to finish as it may help someone else in the future...
Images below with notes...
1. Focuser and shield flocking
This was the easy bit. A strip stuck inside the focuser, and just unscrew the shield, draw round it, cut the material and align and smooth down. In the last image above you can already see the significant improvement on reducing reflections comparing the flocked shield to the unflocked tube...
Notice my version of Bob's Knobs on the secondary mirror which are just black steel M4 25mm knurled thumbscrews bought off ebay for about £7 - along with the thumbscrews already on the 130P primary mirror this makes any fine collimation easy and completely tool free!
For full stealth mode I've also painted the edge and rear of the secondary mirror, and any exposed screw heads with blackboard paint to reduce reflections.
2. OTA disassembly and tube before
Note the cutout in the lower primary housing and the top ring. This aligns with the ridge of the tube seam, and means there is only one way to reassemble the telescope tube and mirror and one place for the handful of screws (4 at the bottom, 3 at the top). You'll also need an allen key to remove the 3 bolts for the dovetail mount. Simple!
Now you're ready to Flock 'N' Roll! 👍🏻
3. Flocking the tube
You'll need approx. 50cmx29cm of the material to do the tube in one go, starting along the seam. As others have described just take your time here, peel off about an inch of the backing and get the edge aligned with the tube seam stick down firmly and smooth out any air bubbles.
Then slowly keep peeling more backing (rip and remove if the excess gets in the way) and smooth down as you go, turning the tube and affixing the velour material.
4. Finished flocking and close up during application so you can see contrast/reflection comparison of before and after.
All in all only took around an hour so not a hard job as long as you prepare and concentrate! I ordered one sheet of 45cm x 1m material which was plenty, however if your not as confident you'll get it right first time then order 2m so you have more to spare if you need to start again.
Looks great, so as always I now just need clear skies to go play and see the difference it makes!
Lots of astro kit for sale! Payment via bank transfer or PayPal (buyer to pay fees). Reasonable offers considered.
1. Sky-Watcher Evostar 80ED DS-Pro Outfit with auto focuser upgrade -- £350
Comes with diagonal, 28mm 2” eyepiece, 2" to 1.25" eyepiece adapter, dovetail, tube rings, SkyWatcher Auto Focuser, HitecAstro DC Focus Controller USB, metal case. Approx. cost new: £562. Buyer to collect from central Bristol, or buyer to arrange for a courier. Note: doesn’t come with a finder / guider, but I have some available (listed below).
Main items similar to:
2. Sky-Watcher .85x Reducer/Flattener for ED80 -- £120 inc. recorded delivery to mainland UK
3. Sky-Watcher Skymax 150 PRO -- £300
Comes with diagonal, 28mm 2” eyepiece, and dovetail. Note: doesn’t come with a finder / guider, but I have some available (listed below). Buyer to collect from central Bristol, or buyer can arrange for a courier.
It's an earlier version of this: https://www.firstlightoptics.com/maksutov/skywatcher-skymax-150-pro.html
Works well with items 7, 8, and 9.
4. Sky-Watcher 9x50 and QHY5 mono guidescope -- £150 inc. recorded delivery to mainland UK
Includes T thread adapter attaching the QHY5 to the finderscope. Also includes kit to convert into a regular optical finderscope.
5. Sky-Watcher 9x50 Finderscope -- £30 inc. delivery to mainland UK
6. Sky-Watcher EQ3 PRO mount -- £220
In pretty good condition, and includes the handset for full goto functionality. Unboxed. Buyer to collect from central Bristol, or buyer can arrange for a courier.
It's an earlier version of this: https://www.firstlightoptics.com/skywatcher-mounts/skywatcher-eq3-pro-synscan-goto.html
7. Astrozap Dew Heater Tape, 6" 'scope -- £30 inc. delivery to mainland UK
8. Astrozap Flexible Dew Shield for Skymax 150 -- £20 inc. delivery to mainland UK
9. StarSharp Bahtinov Focus Mask 150mm Maksutov -- £10 inc. delivery to mainland UK
Items 1 and 4:
Items 3, 5, 7: