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bin star

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  1. Hi, I've recently delved into the world of CCD imaging after a few years of using a DSLR, and have bought an Atik414ex OSC. After a quick unfiltered trial session using SW 150PDS under fairly moonlight murky skies I immediately saw how sensitive this camera is to light pollution, despite it being hard to see with the naked eye. Therefore I'm considering buying a decent LPR filter like the IDAS D1, but before i throw another £100+ at this, I do have the Baader Neodymium with IR cut. It states it's usable for CCD imaging and I have read some favourable write ups but not really seen any true comparisons. From the filter plots, it looks like it should do the job but the proof i guess is always in the pudding! So, has anyone tried CCD imaging with an OSC through the Baader Noedymium and how does it compare with a more expensive filter like the IDAS? Thanks Robin
  2. Thanks for the response. I think the T2 is what I've had to remove in order to connect the DSLR via adapter ring directly to the focuser - in order to bring the camera sensor in far enough to meet the focal point.
  3. Hi, I've recently purchased a SW 150PDS which comes with the crayford 10:1 focuser. I have a few 1.25" filters but after 1st use with this scope and my 500D DSLR last night I found that in order to achieve focus I needed to remove the T-mount from the canon ring adapter, and fit the ring adapter (with DSLR) directly to the 2" housing on the focuser. Although this worked with no problems, it leaves me without the capability of putting my 1.25" filters in line, as without the T-mount, I have nothing to attach them to. Is there any good solution to step the threads down so i can fit my 1.25" filters or do i have to byte the bullet and get the Astronomik CLS clip filter...? Thanks in advance Robin
  4. Thanks for all the advice. Couldn't find Synta but seen a 9x50 celestron finder. Also seen the Altair's 10x60 finder, which I'm assuming could do an even better job of guiding with the QHY5 then a 9x50, perhaps enough to cope with the long FL of my setup (although it does state guiding up to 1000m) Altair 10x60mm Right Angled Illuminated Finder (erect image, variable illuminator, finder bracket, multi-purpose base) :: Finder scopes :: Altair Astro I'll dftly go for the QHY5 as that seems the best guide cam in my range, and I've seen some pretty impressive planetry photo's it's capable of with RGB filters too. Just need to decide on the guide scope!
  5. Hi Uranium and thanks for the reply, Apologies for bad placement of this post - realised afterwards! I don't need to do much adding up as the 2 counter weights (required for the C9.25) add up to 10kg alone. So...i may have to upgrade the mount one day but for now i've got what I've got so for now I'll pursue the finderguider method as it seems the neatest and least weight adding. As the guide cam will be a good investment anyway, I may aswell see what i can do. Also should have mentioned I've got a Focal reducer, so FL = 1480. Still pushing it i know but even if I can get 200 to 300 sec subs that'll be great improvement for now. Could you please advise what finderguider you use with the CG-5. Assume PHD is the software controlling/calibrating the QHY5 cam and mount via ST4? Thanks again
  6. Hi all, After just over a year of learning my way around the night's sky and various telescopic equipment, much of which I've learned about through reading excellent posts on SGL, I've decided to actually register and post a thread of my own! So firstly a bit about me, what I'm interested in and what eq i've got: I recently upgraded from a SW130M to C9.25 SCT on a CG-5. Main reasons being - i wanted see more, and I wanted to start imaging. I've had limited success with imaging, the main limit (for dso) being the exposure times (roughly 60 secs max). I've also got an Orion SSI IV which I used for Lunar/Planetry, however found it's sensitivity to be fairly poor, meaning i can get ok lunar, but fairly low detail planetry shots. I've recently bought a Canon 500D DSLR, for DSO imaging but actually found it's HD video capability better and more convenient than the Orion cam for planetry. So that's where I'm at, DSO with 45 - 60 sec exposures, lunar/plantery on fairly entry level cameras. The next step for me is autoguiding to improve my DSO and a better camera for planetry stuff, which leads me (eventually) to my questions... What autoguiding setup do you recommend with the C9.25 SCT on the CG-5 mount? From initial investigation, it seems the best route for this would be an off-axis guider (given that my mount would prbly struggle with much more weight)...if so, any advise, or tried and tested setups worth recommending? For autoguiding, ideally I want to get a cam that addresses both the need to autoguide, and to be a decent planetry camera. It seems perhaps the QHY5v or a DFK21 might be the route...again advise or recommendations please? Look forward to the responses, glad to be part of the community! thanks
  7. bin star


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