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sockatume

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About sockatume

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    Nebula
  1. Thanks both (and please excuse the late reply!). I'll put cleaning up the threads on the to-do list for any future serious maintenance of the 'scope (e.g. if I ever need to wash the mirror).
  2. I had the locking screws just finger-tight but maybe the metal is a bit soft. There's probably some spares kicking around online I guess? Edit - I'm being silly, if it becomes a problem I could just equally loosen all of the knobs and get far enough away from the clicky spots while having the same collimation..
  3. I dusted off my Skywatcher Heritage 130p (who knew that lockdown would coincide with such bad weather?) and decided to check the collimation as I'd not done that in about a year. The collimation needed a little bit of a tweak, and was surprised to find that all three of the actual collimation thumbscrews (not the locking screws!) now click quite distinctly and noisily in to the exact position I had it in previously. It's like it has a detent now! I'm not sure quite how that could be happening mechanically but it seems that something must've worn or seized. Should I be worried about that? The screws otherwise turn smoothly and it isn't (yet) getting in the way of adjusting the collimation, but if it picks up a click for every position it's left in it soon will!
  4. Thanks everyone, I really appreciate you taking the time to set my mind at ease! I tend to get anxious about big purchases (which this was for me). Understanding how much dust it can really deal with has, I think, helped me stop babying the telescope and encouraged me to drag it out and just use the darn thing. It's a tool after all!
  5. Sorry, just to confirm, you think the haze is normal? It's not dust or anything that's landed on the surface as far as I can tell. The telescope's only been used a couple of times so far.
  6. This is probably a common new telescope owner question but I’d been having some trouble finding an answer by searching. Basically, my secondary mirror seems to be quite hazy in bright light. My second or third night out, I thought I might have got some dust on my improvised telescope shroud (Heritage 130p) and hence on to the secondary. After I packed everything up I pointed a torch at the secondary to check and gave it a few puffs with a rocket blower, one of the ones that’s not got any bristles. (I’m sticking with the general rule of not ever touching any of the surfaces until the day comes that they’re completely filthy.) I noticed that the mirror looks irregularly hazy when lit this brightly. An image is below, along with the dust that’s too small or too sticky to blow off. (My main observing site is next to a tree that has now gone in to bloom, I figure some of this is pollen.) Is the haze just the inevitable light scattering you get with the surface coating? It’s not really hazy looking in daylight, just under a lot of contrast like the LED below. I figure any light actually hitting the mirror is both fainter and moving through the coating at a steeper angle than this, so it’ll scatter far less. Looking through the ‘scope seems fine but I thought I’d ask anyway. Thanks in advance!
  7. Thanks all, I think I'll get the 21st Century... and the laminated field map to get me started. It looks like there's another Sky and Telescope map, "Sky And Telescope's Moon Map", rather than "Sky and Telescope's Field Map of the Moon" pictured above, but from the dimensions I figure that's probably a single square map folded in half rather than four big quadrants.
  8. I’ve been enjoying the moon sections of Turn Left at Orion, especially as it’s an object that doesn’t depend on particularly pristine dark skies. The book’s little tours are fun but I’ve now got a hankering for a good set of reference maps I can use when I spot an interesting feature. I do own a Philips map but it’s more suitable for a wall than next to a telescope. Is there a good reference book for this? Something ring bound or spiral bound would be ideal for using next to my telescope but that’s not mandatory. Thanks in advance!
  9. I had exactly what you are describing, I think it’s normal for certain designs of secondary mirror holders. I don’t have the thread handy right now but perhaps you can see it through my profile. It made the process a bit less intuitive than with the primary but I haven’t touched it since. I have a Skywatcher Heritage 130p and I imagine the mirror holder design is reasonably similar across their range. Edit:
  10. Thanks again everyone. I finally got first light tonight in the form of some staggeringly crisp views of the moon, a bit of the Plaiedes, and splitting Mizar. Nothing too exciting but Orion was behind a street light (seriously) and Andromeda behind a house. Still very satisfying to see the upgrade from my previous “hobsonian” telescope and evidence that I had got it reasonably well collimated. Can’t wait for better conditions, and I’m already snooping about the second hand adverts for plossls...
  11. Thanks all. I’m still figuring out how my secondary support is put together but this has been very helpful in how much I really need to bother with it.
  12. Kind of jamming my smartphone camera against the collimation cap, an arrangement I have a bit of trouble lining up. The camera is focusing on the secondary there, which makes the offset less obvious - there is definitely an offset like yours. This is nearly-collimated:
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