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Found 47 results

  1. Hi All, About to buy my first real scope and mount. I'm wondering if I can put upon you good folks to ask for your recommendations for the items in the title that will match up with and compliment the equipment I'm about to buy. Top of my list at this moment is the SW EQ6 Pro with either the Explorer 250PDS or 200PDS (depending on the all the other items that need to get to at least make it usable fairly usable to start with and how that affect the overall budget). If I have to (for cost at this time), I will drop to a SW HEQ5 Pro with the 200PDS. Fortunately, my girlfriend/partner loves the night sky but I know she will want to see 'results' in the EP straight away and will want to mainly look at our Solar system and the Moon (not that I don't) but she hates the cold and has limited patience for waiting to see anything deeper than those for now. Myself, apart from the above of course, would like to go deeper but also include astrophotography once I have got myself up to a decent level of familiarity with the kit. I have a humble Pentax K20D DSLR and my very old Pentax Spotmatic F (Wet film) camera (It's been with me for a long time and still gets used once in a while). I would very much appreciate your collective wisdom regarding the title items and fitting my DSLR (primarily) to either of the two OTA's above. What is the minimum I need to get, make/models that will get me going and that will complement each other and the system without having to take out a second mortgage just yet ;-) and get me off to a fairly good start. I'm sure you have all had these questions before and I apologise if your first thought is "not again" :-) ... It's just that I have been lurking in the background of the site for a few weeks now reading up as much as I can and trying to pull a list together but my brain seems to have turned to fog now and after reading something earlier to day of EP's and Barlow's and that the optics in them (for want of a better word) should be in 'harmony with each other and the system, I've completely lost where I thought I was going and then also the subjects and threads that I had been using to 'guide' me elsewhere on SGL. Many thanks in anticipation. Kind regards, Chris.
  2. I know that astrophotographers can use diffraction gratings and filters to image a star's spectra. However, is there a filter or eyepiece that a visual observer can use to see a star's spectra? Like, look through an eyepiece and instead of seeing points of light you see each star's spectra? Or am I going stir crazy from a lack of observing ?
  3. Hi everyone on this sunny Sunday :-), i was going to order my new bits last night:- DMK 21AU618.AS Opticstar Manual Colour Filter Wheel (it has 5 positions plus 3 adapters) a powered is too expensive at the moment for me at this time. I then realised how many filtters there were & i need some advice for the correct ones for me, i will be imaging Planets, DSO's through 600D & probably Solar & Lunar. Can you use some of the filters for Planets & DSO's ? Found these so far:- 1) Filters - Opticstar 1.25" High Transparency LRGB Imaging Filters £99.00 Specs :- High transparency filters are placed within a thin metal ring with a full 26mm clear aperture that threads into the barrel of any standard 1.25" eyepiece or filter wheel that can accept 1.25" filters. Each filter is threaded at both ends to accept another filter if required. Filters come inside individual plastic cases with a transparent window. All filters are IR blocked which is important when imaging. Filter Transparency: Clear: 95% (with Infra Red Block) Red: 94% (with Infra Red Block) Green: 92% (with Infra Red Block) Blue: 91% (with Infra Red Block) OR Opticstar 1.25" LRGbB Imaging Filters £39.95 (seemed too cheap) OR Baader RGB Filter Set with IR Cut £73.00 from FLO's site :- ' An affordable set of quality absorptive 1.25" filters with high transmission. Includes Red, Green, Blue and IR block' OR Baader RGB Filter Set with IR Cut CCD SET £198.00 from FLO's site :- 'A NEW line of premium quality Baader LRGBC filters that compliment Baader's narrowband emission line filters (H-beta/OIII/H-alpha/SII). Elaborate anti-reflection coatings, planeoptically polished to 1/4 wave and parfocal. Note: The LRGB filters include IR-block coatings so the clear filter is necessary if you wish to image the full spectrum, including IR, otherwise you need only order the LRGB filters. All the filters, including the clear filter, are very nearly parfocal so there is little or no need to refocus between filter changes.'
  4. Hi, when I get my 130p I would like to do some solar viewing after seeing many posts on the forum looks quite interesting. I would like to know what’s the best type of filter there is to use. Also do I need any filters for the eyepiece it self? And do I need to buy anything to keep my scope and myself safe? For example a cover to put on over the scope to keep it from heating ? I was looking at this https://www.firstlightoptics.com/solar-filters/astrozap-baader-solar-filter.html sky and telescope done a article and mentioned the Baader to be the best one is this the one they are talking about? ( apologies if this has already been mentioned and if it has please link the thread) Sorry if these seem obvious answers but want to make sure and be as safe as possible
  5. Please could you tell me were to get the pass bands for all UHC and oxy 3 filters, or please give options on the best. thank you.
  6. I have an Orion UBlock, a Lumicron Olll, and a Baader Neodymium filter, all 1.25.” The Baader screws on nicely to all my Televue Plossyl and Delite EPs. However, while, both the Orion and the Lumicron fit well to my 32 and 15mm Plossyl, neither screws on tightly to my 25mm Plossyl or my 18.2 or 7mm Delite). All fit nicely to my 2X TeleVu Barlow. From several discussions on Cloudy Nights, it is apparent that that the issue of filter-fit mismatch is common. My main telescope is a Sky Watcher Pro ED100 AP refractor which accommodates my 1.25” EPS via a 1.25 / 2” adapter. My goal, then, is to make all my EP’s compatible with these filter types as well as to make the changing of filters more efficient. I could sell off my Olll and UBlock filters and buy the comparable Baader filters and assuming they fit all my EP, live with the inefficiency of changing filters in the dark. Or, I could acquire a 2” barrel extension to my 1.25/2” adapter and purchase 2” filters that would screw into the bottom of the extension barrel. I could then easily switch back and forth between my 1.25” EPs. In fact, extension barrels are cheap, so that I could even buy three of them, one each 2” filter. Does this solution make sense? Are there more reasonable solutions?
  7. Hi everyone, i was looking for narrow-band filters and i came across the Baader UHC and the Baader OIII. I was reading up about these filters and it says they're "stackable". I wasn't to sure what this meant so i came here to ask. Does this mean that you can physically put a filter on top of another filter and if so would it be advisable with these two filters (Baader UHC and the Baader OIII)?. My telescope is a Skywatcher 130p Synscan GoTo if anyone needs to know. Thanks
  8. Hi,all i have been posting before about this .i need urgent guid and exact guid .i have bought celestron astromaster 76eq.it has 10mm eyepiece and 20mm .at first i observed moon and i was able to get the view .then i went for jupiter i was only able to see the moon .and for mars it was better with unaided eye .kindly guid me following 1.what filter for light polution u guys will recomend 2.which eye piece for better view of mars 3.which filter for nublae and etc infact going out of city is fairly dificult for me so mainly i ll remain in light poluted area. Also let me know what can i expect to see with my current equiments Guid urgent as i have to order it from england today i live in pakistan.
  9. Hi, These Baader Narrowband 2'' mounted filters are for sale. In perfect condition! No dust, scratches. I have barely used them and now I have switched to QSI 36mm unmounted. Baader 2" H-Alpha Filter - 7nm for astrophotography - 140 GBP Baader 2" O-III CCD Filter - 8.5nm - 110 GBP Baader 2" S-II Sulfur Filter - 8nm -110 GBP 360 GBP Total price. I prefer not to split them. Thank you!
  10. Hi , I am looking to buy my first cooled CCD camera and would like some advice on the best combination of camera, filter wheel and filters for my setup. I currently use DSLRs (1 modded and 1 unmodded) with a Altair wave Ed80 triplet mounted on a NEQ6. I guide using a Orion SSG, which works really well, and mostly image DSOs (nebulae and some widefield shots of galaxies). I have looked at some cameras online but don't really have a clue where to begin. My budget for camera, filters and filter wheel is about £2.5 - £3k. Any help/suggestions would be greatly appreciated. Thanks
  11. Does anyone here use very narrowband filters with very fast systems? Currently I have a set of 12nm bandpass Ha, SII, OIII filters from Astronomik. Even with my existing kit, that isn't narrow enough for the length of exposures I want to do, and I'm thinking about getting much narrower ones. But I also tend to work at very fast optics. E.g. I historically tended to use f/2 at 2 minute exposures, which most of the time was already light pollution limited. Since I got an EQ6 I've dabbbled up to 8 minutes, and I might get a little more depth but the background is definitely the limiting factor there. So, any tips on very narrowband filters and fast systems? Being realistic, I need to slow the optics down anyway as I move to longer focal lengths, so I guess how narrow can I realistically go at say around f/2.8? I notice that Astrodon suggest their 5nm filters are workable at f/2, and the 3nm is good for f/3.5. But their data is based on a very large 50x50mm target area, so the light ray angle variation in the middle of that would be reduced further.
  12. If you had a $100, or maybe $200 burning a hole in your astronomy funds pocket, what filter would you purchase FIRST, if you had none? Consider whether it could be used both for visual and AP. Also consider that all owned EP's (so far) are 1.25", but they are used in a 2" diagonal, that will also accept filters. What's the best bang for the buck? (I assume 1.25"), and if there's no significant difference between 1.25 and 2" filters, will $200 buy more than one 1.25", if so, what are the TWO filters you'd buy first? While typing all this, I considered that one of my T-adapters for my DSLR has a 1.25" end, the other is whatever size screws directly to the rear cell (for prime focus).
  13. Hi everyone ? I'm looking to take my first steps in buying more equipment than what came with my Skywatcher 200P, which was 25mm and 10mm lenses. I enjoy looking at planets, nebulae and managed to get my first look at Andromeda the other night which was amazing. Are there any filters or lenses (or anything else) less than £100 that I should consider buying to improve my viewing? Looking at the range of things available is a bit overwhelming. Thanks!
  14. Just wanted a bit of advice regarding mono imaging. I have a few filters that came with my second hand scope. They are all revelation filters I know these are not top quality but has anyone used these for imaging? I was looking at a light pollution filter found this on eBay https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F370861000046 im sure it’s not perfect but has anyone tried them or similar? at some point in the future I do plan to buy good filters and make a filter wheel but before spending more I want to make the most of what I have unless it’s entirely futile to try
  15. Hi I'm selling my Baader 1.25" CCD RGB filters. They are used, but in excellent condition with no scratches or anything of the sort. Price £115 including delivery to a UK address. Payment via Paypal (buyer pays fees), Paypal friends, or bank transfer Any questions, please ask.
  16. I have an 8-filter filter-wheel, fully populated with filters. But, alas, which filter is which. I know the set is R G B C Ha OIII SII L -- and I suspect that is the order of the filters in the SBIG FW8G-STXL filter wheel. But is there any reasonable way to confirm? I took the filter wheel apart and eye-balled the filters. Non have any markings on them and the colors are not obvious, to say the least. Any thoughts? Thanx.
  17. I was in the market for a LP filter and was umming and ahhing about the various kinds out there, from the cheapo Ebay options up to the CLS Clip Filters that are over £120. I was initially going with the CLS Clip Filter, but was a little unsure about the price and whether I was going to get value for money with my simple set-up. After reading a bit and taking some advice on SGL I decided on giving the Skywatcher LPF a go - £30 (Wex Photographic) so it wasn't going to break the bank if it didn't work. I am using it on the Lightwave Field Flattener I got at the same time and here is just a very brief, basic, entirely unscientific comparison of two shots I took of Orion. The first is taken without the filter, ISO 800 for 30 seconds. And the second was with the filter, ISO 800 for 60 seconds Now, I said this wasn't scientific and is very basic, but I think the effect is clear as the image is a lot darker on the second image even at twice the exposure length. I admit they were take a few nights apart - although both without a major interference from the Moon - but I was happy with the result and, for £30, I think it was a pretty good, low-budget investment for my little set-up. I also add that I am in a fairly bad area for LP and the street lamps were put in about 10 years ago. Not sure what this makes them (I told you....unscientific) but the LP does seem to be reduced. It may not work as well with newer lamps. I am sure some seasoned pros will have just fainted at the basic comparison, but I hope this is of some use to anyone wondering whether the SW LPF works.
  18. Hi, Amongst a new EP and barlow I got for Christmas I also received a #21 filter, which I asked for. As most of my imaging is lunar I thought it would be a good thing to have and visually it is stunning, however what little time I have had to use it I've found that I have struggled to find focus plus, and this may be a really stupid question, I wondered is it possible to "wash out" the orange but keep it's better contrast quality when editing the final image. Any help appreciated. Thank you
  19. From the album: Random

    A manual 5-position 1.25" filter wheel by ZWO and the associated RGBL 1.25" filters.
  20. From the album: Vicky's Astronomy Gear

    My flight case containing most of my visual astronomy gear

    © Vicky050373

  21. I don't know if you've seen my smudged image topic, but I was talked into selling my scope (Meade ETX-90) for a replacement scope. I've always had my eyes set on an Orion XT8 8" dobsonian telescope. The scope comes with a 2" to 1.25" adapter, 25mm Orion Sirius Plossl EP, and some other stuff to overflow my accessory case. I already have a couple of eyepiece filters and eyepieces. But what would you recommend I get with this scope? I plan on getting a moon filter and filtere du solaire with my scope. Here's the link for the scope: http://www.telescope.com/Telescopes/Dobsonian-Telescopes/Dobsonian-Telescopes-with-Free-Shipping/Orion-SkyQuest-XT8-Classic-Dobsonian-Telescope/pc/1/c/12/sc/398/p/102005.uts?refineByCategoryId=398
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