Jump to content

Narrowband

Dave-P

New Members
  • Posts

    23
  • Joined

  • Last visited

Reputation

28 Excellent

Profile Information

  • Location
    Aberdeenshire

Recent Profile Visitors

The recent visitors block is disabled and is not being shown to other users.

  1. Fully agree, the lack of dimensions on a lot of these expensive CNC-milled objects is criminal. Think I've found a TS Optics plate that will do the business (and has dimensions for bolt holes). Just need to double check that my telrad base will fit between the rings on it. Currently only seeing the long version of the the WO Vixen plate, which would cause dew-shield issues. Be a shame to put it straight on the chop-saw to hack it down a bit.
  2. Quick update to this - whilst I was weighing up the pro's and con's of FPL51 Vs FPL53 ,fate intervened and I stumbled across the attached on Astrosellbuy (or is it buysell...). An Altair 102 F7 EDT APO triplet, picked up for slightly less than a new FPL53 doublet. A credit to it's former keeper. Just rigged up this afternoon, expecting clear skies late April or so...
  3. You had a farther? I had to differentiate myself from my siblings by a rudimentary process of cellular division, floundering around in the primordial soup....
  4. You had teeth? We had to spend months on end spitting gravel at the bottom of coke bottles to try and get a decent figure on them. And that was before they'd invented stars, we'd spend night after night staring into the inky blackness, waiting for the big bang to happen ...
  5. That's exactly what worries me, the rings are so thin, and I'll have to hacksaw the bolts back to avoid scratching the tube, so there may only be 5 or 6mm holding. Think I'll use a dovetail plus 2 bolts to get first light, but I'll order up a wide plate dovetail as a "forever fix" today. Thanks everyone.
  6. I know that, logically, 2 bolts should be fine. Think it's the lack of redundancy in the system that bothers me, if one bolt failed it would rapidly become "not fine". With 4 bolts, one could fail and fineness would still prevail
  7. Can you remember where you picked that up? Struggling to know what I'm searching for...
  8. It's not the bolts that worry me, more the fact that they're only going 7 or 8mm into soft aluminium
  9. Welcome Bogmonster! Is it true that Irish Astronomers use two finderscopes on their telescopes? To be sure, to be sure... Sorry....
  10. Hello, just picked up a 2nd hand Altair 102mm f7 refractor with the CNC tube rings that are quite common on these. Looking to attach to Vixen dovetail, but the only way this would seem to work would be a single M6 bolt on each tube ring through the dovetail (rings can take 5 M6 bolts each, but spacing not helpful). Is 2 M6 bolts enough, or should I be looking at some sort of plate between rings and dovetail? Thanks.
  11. John should have included an "I am a pedant" option 😀
  12. Purely manual at the moment, still quite newly into the hobby (visual only). Learning the relationship between the constellations and the objects is at least half the fun at the moment.Think I'm learning a lot more through star-hopping and paper atlases than I would via goto. I will use Starmap on my phone very occasionally if I get totally confused. Using 7x50 binoculars to get the hang of new "routes" before using the scope. I find that I'm starting to pick out some fainter objects with the naked eye now (beehive cluster, double cluster, etc) just because I've learned where they sit in relation to brighter stars. Think I've still got a few years to go building up a decent working knowledge of the northern skies. Although I can see the obvious benefits of goto for people tracking down faint galaxies with massive focal length scopes, or astrophotographers who are impatient to gather as many hours of data as they can.
  13. I have been searching for generic items but the market seems fairly bare. Strange for a hobby where utterly niche accessories are the norm...
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.