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jonathan

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About jonathan

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    Sub Dwarf

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    Male
  • Location
    Scarborough, North Yorkshire
  1. I have a refractor in a set of CNC rings which have screw holes already present, I think these are probably for mounting a guide scope however I'd like to mount a red dot finder instead to complement the 10x50 finder. Does anyone know what finder mounting bracket I could get that would fit these holes, or what I could do to make one fit? It needs to be low profile so that the scope will fit in its case, I will remove the finder when storing the scope so a quick release type is what I'm after, something like this https://www.firstlightoptics.com/finders/finder-mounting-shoe.html but preferably in black. Here's the scope: I want to avoid using a single screw as this seems like it could easily lose alignment. Also not sure what size screws I will need, I have some but haven't tried them yet (and don't have a finder mounting bracket to test with).
  2. Forgot about astroboot, will have a look, thanks!
  3. No, sorry, that is totally different to what the 8SE comes with. This is what it looks like (except I would want the bracket only and with a flat edge instead of curved). https://www.astronomics.com/images/Product/large/3941.jpg Hmm, looking at the second bracket there it does appear to have a flat profile underneath, I might investigate that whole Red Dot Finder as an option just to get the bracket if it's cheap enough.
  4. I'm looking for a mounting bracket similar to the one that comes with the 8SE for the supplied basic red dot finder, it is to go on a tube ring which already has five screw holes in it along a flat section (presumably for guide scopes etc). The holes seem to have odd spacing, from centre to centre they are 11mm, 19mm, 19mm, 11mm, and between holes it is 5mm, 12mm, 12mm, 5mm, according to my approximate measurements. I just want to be able to fit my existing red dot finder to this scope as well as my 8SE, but for the life of me I don't seem to be able to buy that little mount that comes with the 8SE, curved base or not (I need a flat base or one that can fit either style). Thank you in advance!
  5. I like it, however how do you carry a few at once securely, how do you store them, and how do you know what's in each bag?
  6. I bought it from a car boot sale for about £5, bought the foam for £8, bargain. Just need to decide on layout now. I may just put in the eyepieces, filters and star diagonal for now.
  7. My current eyepiece case has become rather crowded, the other day I came across a potential replacement case which I thought looked slightly larger so bought some new foam for it, now I have the opportunity to lay out my eyepiece collection in a more organised manner, just thought I'd run this past my fellow eyepiece case owners for a bit of advice. The new case came with a foam flap in the lid which I thought I might be able to use for observing notes, instruction manuals, maybe a few tools. I'll probably need to cut the foam to fit my A4 documents or small books. I can't decide whether I should put some bits that I wouldn't use at most observing sessions such as the extension tube in a different case (maybe the old case with new foam), or try to squeeze it all into one case. I would likely place the dew controller vertical which would save some space, maybe the smaller black cable could go next to it. The foam isn't pluck or cubed, I'll be cutting out the shapes all the way through as there is a separate 20mm layer of foam underneath this one.
  8. Are you kidding? I saw loads tonight - stars, starbursts, rockets, whizz-bangs... I was quite amazed at how well the bonfires stood up to the frequent passing heavy showers, I stood at the top of the garden with a view across the valley for a while under an umbrella. Doubt there is much chance of a dry night here in the East, showers coming down all night and all tomorrow from the looks of things.
  9. Thanks, I really like the cool bag idea, otherwise very similar (same battery too, just about) to what I had in mind. The converter you bought probably just contains the same circuit, the metal casing will be for cooling.
  10. I'm wondering about using a 12V battery with my CG-4 (EQ3-2), and came across this tiny circuit that should be able to supply 6v 2A from a 12v battery, has anyone experience of using these types of step-down circuit? http://www.ebay.co.uk/itm/POLOLU-2575-2A-6V-Step-Up-Step-Down-Voltage-Regulator-S18V20F6-uk-stock-/191925035657?hash=item2caf9fa289:g:g1EAAOSwtnpXi-A3 Seems like it would be a good idea even for 12v - 12v to have such a circuit in-line, no more sloppy power problems when the battery runs out of volts. I don't normally run any additional items with the CG-4, but if I did then they would be 12v (e.g. dew heater) and could be run directly from the battery for maximum power.
  11. Looks like the Explore Scientific gets the thumbs up then. I think it may be time to re-foam my eyepiece case.
  12. I am seriously looking at this Baader Hyperion 68 degree 13mm eyepiece as a high power for my SCT and in-between power for my 150P Skywatcher newtonian and the refractor, seems like a good solid eyepiece that should work in all of my scopes, even if the 'quality' is more than is necessary for the SCT. I have a 10mm but often that is unusable in the SCT due to sky conditions. Thoughts?
  13. I got out tonight with the binoculars on some nice easy clusters and such around Cassiopeia. Forecast was for occasional rain and then cloud coming in by midnight so I didn't get the scope out, so far it's been beautifully clear and now the forecast has changed to zero cloud all night. Oh well, call me a defeatist but I can't be bothered now, at least I got my binocular targets.
  14. To be honest it's been fairly quiet this summer, last year was busier. A good sunny day in winter can be interesting still though, but the observing window is smaller due to the sun never getting that high.
  15. I congratulate you on your choice. I never really got into observing named sunspots etc, I just look at the fancy patterns and coo when there's a big prominence! Maybe I should start to take it a bit more seriously...
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