A good quality Astrodon narrowband 5nm imaging filter with nice clean glass! ..£140.00
In nice clean used condition and super stable, Parallax are still the best in my opinion :)..£130.00
mint condition in protective caseM48 thread on one end and T2 (0.75 pitch) thread on the other..£130.00
This adapter is new open box Details from the web: The Baader zero tolerance protective Canon EOS T Ring is the BEST T Ring available for Canon EOS DLSR with EF bayonet fitting.Offers a number of advantages over a regular T Ring:Zero tolerance design optimised to fit Canon EF bayonet fitting. The result is a wobble-free T ring with no lateral play ensuring a stable image platform even for long exposures or during telescope slewing.Designed to offer the largest possible free aperture resulting in less vignetting even with extremely short focal length telescopes.T2, M48 or 2" nosepiece connections included.Ability to accept Baader 2" LPFC (low profile filter cell) or unmounted 2" filters without extending the back focus.Optional clear filter to protect your camera sensor from dust ingress (ideal for long exposures) and humidity.Components Supplied1. Protective T-Ring for Canon EOS body2. Optional: Baader clear protective filter, 50.4mm x 3mm (protective T-rings are available with a range of pre-assembled filters. see below for details)3. Temperature compensation ring (to prevent filter damage at high temperatures)4. S52/M48 adapter ring (M48 corresponds to the international 2" Astro filter thread)5. M48/T-2 insert ring6. S52/2" connector socket (with additional 2" M48 filter thread on the front side) ..£50.00
In good used conditionAllows Kowa TSN 600/ 660 series eyepieces to be used on the Kowa 820 series scopes ( TSN 821, 822, 823, 824, 821M, 822M, 823M, 824M )..£500.00
In good used conditionThe Custom Scientific H-Alpha 656.3/4.5 nanometer filter is a great accessory for imaging emission nebulae which emit large amounts of the H-Alpha spectral line at a 4.5 nanometer bandpass due to excited hydrogen atoms. This helps enhance the visibility of hot gas being excited by the electrons giving off excess energy of photos due to close luminous hot stars being born nearby. Since this is a 4.5 nanometer bandpass, it is highly recommended that this filter be used with telescopes that have slower focal ratios to achieve maximum efficiency. This filter is available in 1.25" round mounted, 50mm round unmounted, and 50mm square formats. H-Alpha filter wavelengthExcellent for slower focal ratio telescopesWorks well with emission nebulae or planetary nebulae with excited hydrogen atoms..£200.00
Good quality set of RGB filters in nice used condition - early set so 1mm thick glass fully unmounted..£80.00
This item is in superb condition ..£75.00
Sold on it's own, useful as a replacement or spare...£80.00
This item is in superb condition ]The Astronomik CLS is a budget filter for visual observation, Black & White photography and CCD photographs of nebulae, galaxies and star clusters with astronomical instruments of any size. We have re-desgined all of our photographic filters. Since the end of 2008 we are shipping our new "Halo-Free" filters. read more... The Astronomik CLS blocks the light of the spectral lines of mercury and sodium-vapor lamps and lets the largest part of the visible light and H-alpha emissions pass. All the important emission lines, as well as the spectral region that the very well dark adapted eye can see, can pass through the filter. Main use The filters are optimized for use with aperture ratios from 1:3 to 1:15. Transmission losses and chromatic distortions, which are problems with other filters, only appear with Astronomik filters when extremely bright aperture ratios of 1:2 and more are used. The CLS filter is suitable for use with telescopes of all aperture sizes. ..
In good used condition and full working order Details from the the web below: Tele Vue TV-NP127fli - 127mm, f/5.3 APO (Nagler-Petzval) Astrograph Refractor for wide-field imaging with Finger Lakes Instrumentation Atlas focuser, CenterLine filter wheel and ProLine cameras. Tele Vue Optics and Finger Lakes Instrumentation have teamed together to create a "turn-key," wide-field imaging system dedicated to the astro-imager. The flat-field, fast focal ratio, and short focal length of the NP127fli are a perfect match for the ProLine PL16803 camera. Together they produce over a 4° field of beautifully sharp stars! The NP127fli has been designed to ideally position the Atlas focuser near the center of its travel. Tele Vue's "Large Field Corrector" lens sits within the Atlas and is properly located to accommodate the combined path length of FLI's CenterLine filter wheel and ProLine cameras. All connections use FLI's Zero Tilt Adapter system. Additionally, Tele Vue's unique image plane tilt correction is incorporated into the new rear section of the NP127fli. In the final stage of the build process at Tele Vue, each scope is set-up so that the imaging train will be as close to perfectly adjusted as possible. User adjustability is built-in to allow for any possible differences between a customer's existing pieces of equipment. Required Accessories: TV-NP127fli Astrograph Finger Lakes Instrumentation (FLI) Atlas focuser FLI CenterLine filter wheel FLI ProLine cameras Specifications: TV – NP127fli Astrograph Type - APO (Nagler-Petzval) Refractor (Elements/Groups: 5/3) Objective (mm) - 127 Focal Length (mm) - 680 Focal Ratio (f/#) - 5.3 Length OTA (inch) - 35.8 (without FLI hardware) Maximum Imaging Field (deg.) - 4.3 (52mm diagonal chip) Weight OTA (lbs) - 15.7 Included Accessories: TV-NP127fli Astrograph Image plane tilt correction system Built-in Tele Vue Large Field Corrector lens Screw-on metal lens cover Rings with 3 point mounting Required Accessories Finger Lakes Instrumentation (FLI) Atlas focuser (Not Included) FLI CenterLine filter wheel (Not Included) FLI ProLine cameras (Not Included) Weight: 18 kg ..£2,400.00
In very nice condition and full working order, a superb big imaging chip at a great price...£1,220.00
A stunning astrograph from Altair Astro, this one has both Vixen & Losmandy systems so will work with either system. Fitted with a large heavy duty Moonlite focuser, one knob is not supplied so its ready to accept your focusing motor Everything that's included in the sale is picturedAre you bored of widefield and the same old subjects, why not get some focal length with your imaging this years and make a galaxy look more than a dusty spec or even do Orion's trapezium up close and personal this winter :)..£2,300.00
A great scope with fast optics for this design and some innovative features like front electronic focusing and collimation, typical of Meade, the black paint on the aluminum has bubbled a little here and there and it's got a few marks but overall this is a nice clean scope This would make a fantastic observatory class instrument :) Good points Internal focusing works Internal collimation works goto works GPS works Autostar II Hand controller included The worlds best tripod Bad points paintwork could do with a clean up Please note this item is local delivery only or collection in person so it is excluded from our online checkout. If you do liver further afield than this we will still be able to deliver at an pre-agreed cost ..