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OK, quick question - With a dome that has a push-to revolving top half would it be advisable / safe to open it up on a sunny day, point the dome opening at the sun and just point the scope (with the caps off) North so the sun should never track to it, in order to eliminate any fungus that has formed on surfaces? I realise the fungus would still be around, perhaps on interior surfaces that don't catch the sunlight, but warmth from the sun shouldn't affect the scope should it?
How often would you say this should be necessary to keep the fungus factor under control?
Similarly, should an eyepiece case be left open and exposed to direct sunlight, and should the eyepieces have both caps off in order for scattered UV to contact the glass surfaces? Will this be sufficient to kill off fungus etc (I read in a post that about 20 minutes should be sufficient)? Is there any danger from or to eyepieces so long as they are not directly pointing at the sun?
My lovely wife bought me a SW Explorer 130 with the basic RA drive for my 40th birthday 8 years ago, and I've enjoyed using it on and off ever since. I've started getting more into it - it's a great beginner scope, but I'm - like lots of others on this forum - looking at upgrading. One of the things I found tricky with the scope was getting the focus just right at high magnification (I'm sure that's kind of obvious!). It does wobble quite a bit on the EQ2 mount when focusing. I get pretty good - if small - views of Jupiter, Saturn, (the Moon, of course) and have had hints of seeing some DSOs.
I bought a 8mm BST Starguider, and it's a great improvement on the standard 10mm that comes with the scope, but if I push the scope by adding the 2x Barlow and the 8mm it's a blur and the focus seems to keep missing the sweet spot. I saw a post elsewhere on this forum by MakTheNight, (looks like they've left now - last post was 2 years ago) who added a Baader Helical Focuser that attached directly to the T-thread on the focusing apparatus on the SW. Link to that post is below. I got one and it is indeed a great improvement on fine tuning - the problem is I can't use it with the Barlow as the helical focuser is about an inch long and the focuser can't move far enough into the scope to focus with the Barlow and any of my eyepieces (the 8mm BST, or the 10 or 25mm standard eyepieces)
Clearly MakTheNight managed to get their setup to work with some specific eyepieces (a Luminos 10mm and 32mm Plossl) and a specific Barlow, so I tried looking up how I could work out what combination of eyepieces and Barlow would work, rather than randomly buying kit and having to return it because it won't work with my scope, but I haven't found anything useful yet. So I thought I'd take the plunge and ask here
Can anyone help me figure out how I can calculate what combinations of eyepiece and Barlow would work with this setup? I'm also looking at upgrading the OTA and mount to a 200P and EQ5 at some point, so ideally would have a combination that could work with that too - the focal length and mirror is quite different - 1000mm on the 200P parabolic vs 900mm spherical on the 130.
I have an eyepiece budget of $1,000 and would like your insights, please, to help me make the best choices.By StarGazingSiouxsie
My budget for eyepieces is $1,000.
I started off thinking I would get a Celestron eyepiece kit for about $200, for example. After trying a few out, I soon realised that I wanted eyepieces of higher quality. My mindset is that I'm investing $2,000 in my telescope, a Celestron 9.25 SCT, and I want to be able to extract from that scope the very best views that I can.
I'm looking to buy 3 eyepieces maximum (not including a Barlow)
Ideally - if possible - I would like to get eyepieces that I can use on both my telescopes, but my priority is toward the 9.25" as that is the bigger investment.
Both my telescopes have 1.25" barrels.
* Cassie - A Celestron Newtonian. Aperture = 130mm, FL = 650mm, FR = f5 Max useable magnification between 250x and 307x
* The Cubble Space Telescope - A Celestron SCT. Aperture = 235mm FL = 2350mm, FR = f10 Max useable magnification between 460x and 550x
I don't feel comfortable spending more than about $300 on each eyepiece
I want these eyepieces to last as long as possible. I try to look after thinbgs if I can.
Decent eye relief if possible
I will purchase a Barlow separately
Field of view - something 60% +
My observing will be probably 80% solar system planets & moon, 20% deeper sky objects
I'm not that in atsrophotogarphy. I have a little Celestron NexImage 10 with which I am hoping to make some videos and stacked images of Jupiter, Saturn and detailed imaging of Pluto ( )
I really just want the WOW factor right now. Enjoying the thrill of Saturn;s rings, tracking Jupiter's 4 main moons, detailed lunar observing etc.
So what would be your suggestions or advice, please?
I have been looking at the Tele Vue Delos & Delite range. The Nagler range looks nice but I'm note sure if I need 82' field of view. A bit pricey, too.
Explore Scientific's offerings are a possibilty.
What's the deal with zoom eyepieces? Does that mean you can have an eyepiece that will do the job, for example, of a 6mm, 7mm, 8mm and 9mm eyepiece all in one? Is there a trade off?? What's the catch??
Regarding Barlows, I was thinking of just keeping it simple and getting a decent 2x lens without spending crazy money. Something in the $150 range. Or would I need a high end Barlow to complement the better eyepieces I am hoping for???
Overall, I'm looking for 2 or 3 eyepieces and 1 Barlow with a $1,000 budget. Any thoughts, ideas, advice or opinions all gratefully received, thank you.
I've recently purchase a Celestron powerseeker 114eq and really enjoying it so far, my next step was to purchase some new eyepieces was looking to get the BST Starguiders, however I am now wondering if i should purchase a new scope, my options would be skywatcher 130P/ DS 150P / PDS 200P, budget will be around £500 should i go for a GOTO version and save some more? is the GOTO something that can be fitted to the mount at a later date (sorry if a stupid question).
Will i see a big difference with these telescopes vs what i have already? Is there diffrent scope you would recommend in the price range? Any help would be appreciated