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Showing results for tags 'lens'.
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I have recently acquired a Vixen Polarie with the intension of doing some wide field imaging, I will be using my modified Canon 600D with it, Currently the only lens i have are a standard kit Canon 18-55mm and a old carl Zeiss Jenna 50mm , so i am looking at purchasing alternative lens to use, The ones i am looking at for now are the following, Canon EF 135mm f/2 L USM Canon EF 200mm f/2.8 L II USM Samyang 135mm f2 ED UMC Samyang 14mm Ultra Wide-Angle f/2.8 IF ED UMC Sigma 150mm f/2.8 APO EX DG HSM Macro Tokina 11-16mm f/2.8 AT-X Pro DX So my question is, h
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Greetings All! Very Short Explanation: I'm disabled (43) and desperately trying to find ways to still bond/spend time with my youngest son (13). My son expressed an interest, about two months ago, in Astronomy after watching a few YouTube videos on the subject (specifically, the moon and our neighboring planets). He asked if one day we could get a telescope. I was somewhat surprised when, over the course of the following days/weeks, he didn't forget about his request or shift his attention to other, "more 13 year old pressing matters." In fact, he became increasingly MORE exci -
I need a Celestron C8 telescope main Lens cap. And a source of used parts as well. Thanks. Rich
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Hi. Complete newbie to the hobby here. Just purchased a Meade Lightbridge 130 for my daughter as an upgrade to her Skywatcher Infinity 76. I'd like for her to see the rings of Saturn sometime with her new scope. Would getting a better lens improve her chances of a good view of the rings of Saturn? And if so, what lens would you recommend. Thank you -
I currently have a Canon T6 with a Opteka 500mm f8 lens ($87) that I use for lunar and solar photography. I recently purchased a full frame Canon EOS R and am thinking about getting a 800mm f11 Canon RF lens ($899). Will the quality on the new canon lens be significantly better than my Opteka lens? Is it worth the upgrade? Also, should I use my new full frame or my crop sensor (1.6 factor) to shoot? I want to get the best quality possible.
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[A few more photos are in the imgur album] Made this telescope for observing sunspots. The Sun gets projected onto a piece of paper after bouncing from 3 mirrors inside the frame. It's compact, light, takes only a few seconds to point at the Sun, and sketching sunspots is as easy as circling the spots on a piece of paper. It can even project the Moon: The design is inspired by a commerically available telescope, but I’ve done all the designing myself, just for the fun of it. Sunspotter is full of little details that make it interesting. How do you fix
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Hi, i seem to have a dirty lens on the telescope side of the lens. Anyone disasemble this before ? I already checked the camera, filter, and focal reducer seperatly, the "staines" are from the telescope-side of the lens (already cleaned the outside of the lens to) Flat frame
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National Geographic 90/1250 maksutov is my telescope and thanks for all the replies and support of my previous post it helped me alot and i figured out how to see the moon for example in beautiful quality but there's the problem i have. I can only see good views and a sharp sight of the moon but that's about it. Do i need a better lens that can zoom even more out or is this the limit of my telescope? Please let me know if you know a solution to this. -
Hi everyone, just looking to get into astrophotography but looking at a DSLR as I'd like to use it for daytime use too, I know usually it's better for them to be modified but I've seen this can be done to allow use for both with only white balance adjustment. I've seen 1300d's going around £200 on eBay with the 18-55mm lens but the 4000d is a couple of years newer and there is currently one with 18-55mm + 75-300mm going for £350 at Currys. From what I can work out there isn't much difference between them besides a smaller screen on the 4000d and the release date. I'm just wondering if th
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Hi can anyone help "PLEASE" I recently found my lens cell on my GT81 was dirty and having Badder wonder fluid and the correct clothes, I attempted a clean on both sides of the cell. Doing everything correctly I find now I have an oily smear on the inside lens. Panicking I spoke to SC Telescopes who advised I hadn't damaged the coatings and that using the soft disposable J cloth type and breathing on the lens I should be able to remove the smears. I have tried this and it isn't working. I would like to get it properly assess and professionally cleaned as I've cocked it up
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Hi All, New to the forum and in astronomy. I got my first telescope about 6 months ago along with a set of eyepieces one of which is the Omegon SWA 32mm (http://www.omegon.eu/omegon-swa-32mm-2r-eyepiece/p,14646) Due to my inexperience and an unfortunate series of events I managed one night to actually unscrew the cap that was holding all the lenses in place and as a result they came out ... Now this happened while observing (!) so I didn't note the order unfortunately ... I have put it back together in what I think is the proper order but the view is now distorted at the edges
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Hi friends, I'd like to make this sunspotter device for my personal use. It seems that I need to buy the following components: - Achromatic lens, 60mm, focal distance 700mm - Mirror 50mm x 50mm - 2 Mirrors 25mm x 25mm But I can't find any website selling any of those . I've seen lots of parabolic mirrors being sold in sizes >= 6'', I've seen tiny achromatic lenses, or lenses costing a fortune. Any advice on where to get lenses and mirrors is appreciated. I haven't looked for the plywood yet, but getting it should be easy
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Hi, I'm going to the US this summer to view the solar eclipse on Aug 21. I'm trying to think what kit to bring over there to photograph the event. I have a Canon 700D. Taking my scope is out of question so I'm looking for a reasonably priced lens to do the job. I only have a 10-22 and a 60mm so need something with much more focal length. I've been doing quite a bit of reading on the topic. i'd like to capture the coronae up to 4x the sun diameter, so thinking around 400mm / 500mm FL. I've come across some russian mirror lens like 3M-5A-MC or MTO 500/f8 or 3M-6A 6.3/500mm. The latter is a -
Hi! Last week I received my Star Adventurer, and I'm learning how to use it. I had no issues aroud 0 - 80mm, but yesterday I was out trying to take pictures with my 200mm Takumar (300mm on my DX body), and I was struggling to point it towards my target (Andromeda). I know where it is, I could see it with my own eyes, yet, I wasn't able to point my lens towards, only after like 40 minutes... :/ I don't know how others do it, so any advice would be appreciated! What I was thinking about: 1. hot shoe adapter + phone holder + phone / tablet with stellarium, so I would see in th
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Hi everyone, Last night I tried to observe the moon, I could clearly see the moon through my finderscope but when I looked through my telescope all I could see is just yellow light. Could you guys give me advice on what lenses should I use? I have a 70060 refractor with 1.5 Erecting Eyepiece, Barlow Lens 3x, and H20mm, H12.5mm, SR4mm. Thanks! -
Does anyone have any recommendations for an affordable lens for the Canon 60Da? I can't afford to spend hundreds on a wide angle lens and to be honest I'm not so much interested in big wide angle shots but more specific targets like the constellation Orion. I love my camera, I've used it many times with my Nexstar Evolution but it's not practical taking my scope with me when I travel (sadly!).
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hi, Which lens is good for astrophotography? i have nikon d3200...
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I have for a long time wanted a lens to my Canon DSLR fullframe in the range of 120 mm to 180 mm with high quality. Often the Canon 200 mm 1:2.8 are told to be of good quality for astrophotography. Half a year ago I found a used Sigma 150 mm 1:2.8 APO lens. I have read reviews that it's good for normal photography but almost nothing about astrophotographing. I have done some simple tests of it with photos of M31 Andromeda and M45 Pleiades. If I set the aperature to 4.0 I get sharpness of the stars in the corners and not too much vignetting. I feel this will be a good lens for my future ne
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Lower price £155 - Canon EF 100mm f/2 USM Lens
bamus posted a topic in Sold / Expired Classified Ads
Canon EF 100mm f/2 USM Lens for sale - lower price 155£ Bought it second habd off ebay before Xmas last year and used only few times. Great f number for astro but realy have to step it down to f3.2 to use it of full frame camera. Havent got much time to use it so have to go. Images to follow. Bank transfe or cash on collection please. -
Hey Guys, I'm not a newbie to astronomy (or reading on SGL ), but am a Newbie to AP (and writing on SGL ). I have a Sky watcher 8 inch dob, and had SW 120 and 102 achromatic in the past. I have a pretty solid Visual background (messier, top 111 NGC and so on), and did some decent job on photographing Sun, Moon and planets with the dob. Now I want to do more serious things in AP field. I have to mention I live in Iran. AP gear can be found here, but it is usually twice or even thrice the price of online markets. For example a SW ProED 80ED has an online price tag of $650 while here is bei
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My first go at imaging m45 shot using a vintage super takumar 135, f3.5 iso640 best 80%of 35 120second subs. The camera was mounted on a star adventurer and polar alignment was rough -
Hi everyone, I am just starting to use my canon 1200D with my telescope using a t-ring and ofcourse want more magnification but i want a set of barlow lenses not just say 2x or 3x, so i hit ebay looking for cheap but sort of ok quality ones, I came across datyson ones for under £10 which on at least one site have good reviews but obviously i am not going to take the word of a site i dont know that sell thems word for it so I figured i would ask here, if anyone has tried these and can give a honest assessment of them it is the members on this site
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Dear all! I am looking for a good Grab and Go Scope / Tele lens with a total price tag below 1000 EUR. I have 5 candidates so far: (1) TS Imaging Star 70mm f/6,78 QUADRUPLET ED - Flatfield ED Refractor - 474mm focal length 599 Euro, no TSFLAT2 necessary + case 60 = 660 euros. astrobin sample w/ DSLR: https://www.astrobin.com/160820/ (2) Skywatcher dublet Apo 80/600 EvoStar ED OTA, FPL 53, 649 Euros +case 60 + flattener 179 = 890 Euros astrobin sample w/ DSLR: http://www.astrobin.com/236429/ (3) TS Imaging Star 65mm f/6.5 Quadruplet Astrograph - 44 mm field diameter 9 -
Hi, i have a Celestron ExploraScope 70AZ, when i look at the saturn or jupiter (low or high magnification) the picture is clear if the object is at middle of my viewing but blurry and color mismatch if the object is at left side of the viewing.
