Secondhand & Stock

Filter 1.25" ND 5.0, price per 1 pc

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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Finsternisse - verstehen, beobachten und fotografieren

Item condition: new and original packed

Flak Binocular D.F. 10x80 Flakglas , Multi-coated lenses and eyepieces, for the age is the binoculars in very good condition. The glass was repainted in this year 2021. The original eyepieces can be unscrewed. We have turned 1.25" screw-in eyepiece adapters for this, so that standard 1.25" astro eyepieces can now be used. The interpupillary distance can be finely adjusted. The alignment is very good. It is rare to find such a 10 x 80 wehrmachtsglas in a such good condition.

Item condition: used, but with visible cosmetic markings

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focusable finder scope eyxepiece 27 mm 1.25", price per 1 pc

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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FTF3235B-A Starlight Feather Touch TRUE-3.0" Auszug 88,9 mm

Item condition: new and original packed

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counterweight 3Kg, Borehole 18mm

Item condition: new, but not original packed

Gemini 41, direct drive Mount with Fs-2 Goto-controller, metal tripod, polarfinder, Stainless Steel tripod, Losmandy dovetail clamp, power supply

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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Geoptik bag 30A044 for middle sized mount heads, like new condition

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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Product description BAG FOR 100mm BINOCULERS Pack in Bag for giant binoculars of 100 mm objective. Put the original packaging of giant binoculars in the Pack in Bag for an easy transport. In the Box: Geoptik BAG for Giant Bino

Item condition: new and original packed

Glass path corrector 1:1.70 for Baader binoculars # 2456316Z

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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GPCAM3 178C USB3 Monochrome Guide / Imaging / EAA Camera The Altair GPCAM3 178M Monochrome camera has the sought-after Sony IMX178 Mono CMOS sensor, with extremely low read noise, wide dynamic range, and 6.3mp resolution (over 4K!). SPECIAL OFFER! FREE 1 YEAR SharpCap PRO License with all Altair GPCAM3 Cameras! Click here for more SC PRO feature info. Just download the latest SharpCap, connect your camera, register when the screen pops up and sign up for your free license. Sharpcap PRO has the amazingly accurate guidescope polar alignment routine, focus assistance, live flat field subtraction and many more great features to make deepsky, EAA or solar system imaging that much easier. Download SharpCap now to take advantage of this special offer. Solar system imaging: The GPCAM3 178M is also capable of solar. lunar, or planetary imaging (video capture) allowing detailed images with refractors of less than 3 metres focal length, where small pixels (only 2.4x2.4um), high frame rates, and low read noise get the most detail. The ROI (Region of Interest) feature can be used for even higher frame rates when imaging the planets, sun or moon at high magnification. EAA & Video Astronomy: The GPCAM3 178M is particularily attractive for Electronically Assisted Astronomy / Video Astronomy because of it's high 6.3 Megapixel resolution and high sensitivity thanks to Sony STARVIS back-side-illumination (BSI) and Exmor-R technology. Using the Live Stacking features in the free AltairCapture software or SharpCap PRO). Time-lapse all-sky imaging and video is fully supported, and the camera can be used with a DSLR lens to image large areas of sky. Deepsky astro-photography: Camera has amp glow suppression, and you can effectively remove any remaining amp glow by using the "Live" darkframe subtraction in AltairCapture or SharpCapor, or with with darkframes during processing as usual. To get an idea of what this camera is capable of, click here to view a lunar image by UK customer Neil Phillips (with Hypercam using same sensor).(Opens new window, compressed .JPEG file) To sum it up, the most desirable features of the IMX178M sensor are: Large 6mp sensor 7.37 x 4.92mm SONY STARVIS and Exmor R Technology with a sensitivity of 2000 mV or more per 1µm² Low read noise, approx. 0.9- 2.2e electrons (e-) or more. Saturation (full well) capacity approx. 15Ke- electrons (e-) High Dynamic Range with 14 bit ADC for high image quality in both light and dark (high contrast) areas. Speed and reliability in one camera: USB3.0 and on-board memory buffering give much faster transfer speeds than the GPCAM USB2.0 series, pushing the USB3.0 format to the limit, yet within a stable envelope. Memory buffering almost completely eliminates dropped frames and corrupted video files, a common problem with USB cameras, and enables faster more consistent frame rates, even with less powerful notebook computers. Consistency and stability is improved for video capture sequences - especially desirable for scientific applications. QUALITY software and drivers included: Unlike cheaper cameras, Altair Astro has spent considerable time developing the extensively featured and intuitive AltairCapture software, which can be downloaded from cameras.altairastro.com. AltairCapture is a stable 64 bit Windows application, which allows full control of the camera in high speed video or still mode. It includes extensive automation features, and supports all the major file formats useful for astro imaging and professional scientific imaging in 14bit or 8bit mode. Furthermore, the popular PHD Guiding, SharpCap PRO , APT and NINA are also natively supported. ASCOM drivers are also available for download at cameras.altairastro.com where you can also get regular driver updates. The installation process is easy, and unlike with cheaper cameras, you don't need to be a computer expert to make your camera work. Wide compatibility: Although the GPCAM3 is a USB3.0 camera, it is also fully compatible with USB2.0 ports when a longer cable and less speed are required, for example in deepsky or video astronomy using the live stacking features in AltairCapture or Sharpcap. Windows 7 to Windows 10 software is widely supported by AltairCapture in 64bit mode (see technical info for details). Autoguiding: The camera has an ST4 auto-guiding port, and can be used to auto-guide with mounts from all the major manufacturers supporting ST4 format, including iOptron, Celestron and Skywatcher. The sensor is more than sensitive enough for autoguiding. Support & warranty: Altair delivers proper on-shore English-speaking UK/EU support with a 2 year manufacturer warranty against defects in materials and workmanship. Now just try that with a Chinese camera! New users should definitely visit the Altair Astro Google User Group where you can get answers to technical questions, as well as sharing tips and techniques, to get the best out of your camera. The AltairCapture software interface supports most European languages including English, German, French, Indonesian, Japanese, Korean, Polish, Russian, Chinese, Spanish, Thai, and Turkish. File formats: The camera can be fully controlled in AltairCapture and SharpCap to output uncompressed .AVI and .SER video files for solar system imaging, as well as all common still image formats such as .JPEG .PNG .TIFF .BMP, and .FITS (for deepsky imaging) to mention just a few. The IMX178 Sensor supports 8bit or 14bit ADC output. The 14 bit output mode can be used for deep sky imaging with less frames needing to be stacked and a wider pixel intensity range. The sensor sensor is extremely sensitive and a good candidate for video astronomy, especially with small refractors (final .FITS file is stretched to 16bit for post processing compatiblility). Find out more about bit depth here. Find out more about video & file formats here. What’s different about the GPCAM3 platform compared to the GPCAM1 and GPCAM2? GPCAM3 has additional electronics for USB3.0 support, and to make space for the FULL SIZE USB3.0 connector. (We feel USB micro connectors are not a good idea for imaging because they don't maintain a reliable connection and wear easily, so we used full-size dual port connectors on this camera). Better control with Trigger Mode: "Trigger Mode" is fully supported to make long exposures of over 5 seconds easier to control. With most CMOS cameras, in normal video mode, the camera controls are "locked up" during a long exposure, so you have to wait for the exposure to complete before the camera will accept any commands. So you have to wait to abort a frame if a cloud covers the view, or make routine changes, say gain (ISO), exposure duration, re-aligning or refocusing on the object. However in "Trigger Mode", you can now stop the camera instantly (even if you are half way through a long 30 second exposure) change the settings, and re-start the camera looping again. For long exposures "Trigger Mode" is essential. Of course you can use normal video mode at up to 5 second exposures for video astronomy and solar system imaging. The GPCAM3 also has improved circuitry to improve data transfer stability at high frame rates (reducing dropped frames) and to increase compatibility with a wider range of PCs. This gives a more consistent data transfer rate over USB buses on laptops or desktop PCs. Included in the box: Camera body. 1.5m High-speed USB3.0 cable. 1.5m ST4 guide cable. 1.25 inch x nosepiece with female 1.25" filter thread on the front. (Optional 2" OD Nosepiece with dual 2 and 1.25" filter threads is available, code GPCAM-2IN) CS-Mount insert (12.5mm back-focus) is pre-installed on camera. (Optional 5mm extension adapter is available for C-Mount lenses requiring 17.5mm back-focus.) UV-IR Blocking Filter with Anti-Reflection coatings. (Removable for sensor cleaning). Plastic dust cap 1.25". Silicon dust cap for sensor. Note: This camera does not come with software in the box. To operate the camera you will need to download the latest camera drivers at cameras.altairastro.com (opens new window) Specifications: Sensor type: 1/1.8 CMOS IMX178 Horizonal Resolution: 3040 Pixel Vertical Resolution: 2048 Pixel Pixel: 6Mpx Pixel size: 2.4µm x 2.4µm Bitrate: 8bit/14bit Connections: USB 3.0 Power Supply: with USB Connection to telescope: 1.25 Inch Maximum exposure length: 5s, with Triggermodus 16 Min. Software: download

Item condition: new and original packed

Large Citizen N50° Cosmo Sign Clock OK3069-A Brass Table Clock Accurate. The celestal face moves respectably. Awesome condition all around and still working fine Some light blemishes on the brass throughout the body due to age. (See Pictures) The base and the frame are brass, the back part is plastic. Origin:Japan Shape:Rectangle Movement:Quartz (Battery Powered) Power Source:Battery Color:Gold Material:Brass Vintage:Yes Brand:Citizen Display Type:Analog Frame Material:Brass Features:celestial Time Period Manufactured:1990-1999

Item condition: used, but with visible cosmetic markings

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large case for old 150 mm binoculars; Weight 12.5 kg; Outer dimensions : 81 x 52 x 28 cm; Inner dimensions : 79 x 50 x 26 cm

Item condition: used, but with visible cosmetic markings

This 532nm Green collimator version is much brighter than the red ones (632nm or 650nm). In most circumstances it is overly bright for night time collimation, but it is useful for Barlowed or holographic collimation in daylight or higher levels of ambient light. Aligned to within 15 arc-seconds Scope of Delivery: Laser

Item condition: new and original packed

GSO - Dobsonian GSD 200c

Item condition: new and original packed

primary mirror mount with frame for Dobsonians up to 20", 18 point bearing and fan, for self-builders, used and functional

high quality projector 3,2 :1

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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Howie Glatter 2"/1.25" 650 nm Lasercollimator All of the collimators are powered by a CR123A lithium cell, giving about 40 hours of service, and about 4 hours in the 532nm collimator. They come with one battery, a plastic case and collimation donuts. All Laser Collimators incorporates a solid state laser diode that does not fade or change with time and use. Factory-aligned to 15 arc-seconds providing 0.1 inch accuracy at a distance of 20 feet. Shock resistant to keep its alignment - even when dropped. Includes 123A Lithium Battery, 1mm Aperture Stop, Removable Diffractive Element, Case, Collimation Rings and Instructions Delivery contains: Howie Glatter Lasercollimator 1 1/4" with 650 nm Laser Diode Battery Storage Case

Item condition: new and original packed

Howie Glatter 2" 650 nm Lasercollimator All of the collimators are powered by a CR123A lithium cell, giving about 40 hours of service, and about 4 hours in the 532nm collimator. They come with one battery, a plastic case and collimation donuts. All Laser Collimators incorporates a solid state laser diode that does not fade or change with time and use. Factory-aligned to 15 arc-seconds providing 0.1 inch accuracy at a distance of 20 feet. Shock resistant to keep its alignment - even when dropped. Includes 123A Lithium Battery, 1mm Aperture Stop, Removable Diffractive Element, Case, Collimation Rings and Instructions Delivery contains: Howie Glatter Lasercollimator 2" with 650 nm Laser Diode Battery Storage Case

Item condition: new, but not original packed

Hoya 49 mm Softener ( 8 ) , Japan

Item condition: used, but with visible cosmetic markings

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Hyperion® / Morpheus eyepiece case; Eyepiece case with pre-punched compartments for up to eight eyepieces Suitable for Morpheus and Hyperion eyepieces Delivery WITHOUT eyepieces Size: 47.5 x 33.5 x 13.5 cm

Item condition: new and original packed

Intercon Spacetec ICS Premium Nebulaefilter O-III, 2"

Item condition: new, but not original packed

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interstellarum Deep Sky Guide

Item condition: new and original packed

INTES-Moscow 2" Crayford focuser for MK 67, retracted length 67 mm. Stroke 35 mm

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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iOptron 4.5 kg Counterweight for iOptron CEM25 and iEQ30 The counterweight fits many iOptron mounts, but also Vixen, Celestron and Skywatcher mounts with D=20 mm counterweight rods.

Item condition: new, but not original packed

iOptron GPS Module for CEM26/GEM28/CEM40/GEM45 This 32-channel external GPS module is for CEM26/GEM28 mount. It is also a replacement module for CEM40/GEM45 mount. It consists of a GPS module and a 6P6C connection cable (straight wired).

Item condition: new, but not original packed

japanese Filter ND 50, 1.25"

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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adjusting flange for M63 reducer

Item condition: new and original packed

adjusting flange for M63 reducer

Item condition: new, but not original packed

Kellner Okular 20 mm, 1.25" , coated

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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Clearglas Filter M48

Item condition: used, but with visible cosmetic markings

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Kowa 50 x wide Okular ( 9 mm 67° Feld, 1.25" ). Glas and coating in mint condition

Item condition: used, but with visible cosmetic markings

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KSON Eclipse Elzentrik ALt-Az mount with handcontroller Excellent used condition

KSON Eclipse Elzentrik ALt-Az Goto- mount with handcontroller, counterweight and tripod Excellent used condition

Connection cable to control EOS-5D, 6D, 20D and similar via Lacerta M-Gen autoguider The connection cable allows the control of Canon EOS cameras via the M-Gen autoguider.

Item condition: new and original packed

empty tube from Skywatcher 300PDS Newtonain OTA

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

Leitz Wetzlar Binocular TRINOVID 8x32 150 m /1000 m Germany, Serial No. 637921 with visible signs of use, but otherwise in perfect working , super adjusted condition

Item condition: used, but with visible cosmetic markings

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Lille Finder 50 mm 90 degree rerect image with guiderings and dovetail for Lichtenknecker holder

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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Linhof vintage photo tripod with a small crank insert and Linhof panorama head

Item condition: used, but with visible cosmetic markings

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Long Perng 90 mm f/500 mm F/5.5 ED Apo, Very fast travel apo with 90 mm aperture and 500 mm focal length for observation and astrophotography. New price was Euro 1,000. ♦ Aperture 90 mm / focal length 500 mm ♦ Very good speed with f/5.5 for short exposure times ♦ Ideal travel telescope with only 410 mm transport length ♦ Oversized 2.5" Crayford focuser for very good illumination even with CCD and DSLR cameras ♦ Micro-reduction for high-precision focusing ♦ High-quality 2-element ED objective for a high-contrast and color-neutral image At the base of the apos you have a universal connection plate with two 1/4" photo tripod connection threads. This allows you to adapt the telescope to good tilt heads or ball heads like a spotting scope. However, you can also adapt a GP Level or Losmandy Level dovetail bar to the base and then attach the apo to an astronomical mount. You can find suitable rails in our accessory recommendations. Weight only 3.4 kg Scope of delivery: Optical tube, case, red light finder. Translated with DeepL.com (free version)

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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Losmandy like Prismclamp

Item condition: used, but with visible cosmetic markings

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LT 45 - Precision linear tables, travel 25 mm; travel range 110 mm fine-thread spindle with clamp for industrial applications Characteristics travel 25 mm designed for industrial applications fine-thread spindle with low backlash carriage with ground and stainless recirculating ball bearing guides fixing device to fix the adjusted position deformation-resistant aluminium reflection poor, black anodized XY, XZ or XYZ assembly possible The precision linear stages LT 45 are the slimest of the LT series. They are the appropriate choice for both industrial applications and R&D. In face of their low width the special guidance provides a high load capacity as well as a virtually slip-stick free motion for low available space. It is possible to sensitively adjust the breaking force of the clamping element up to the complete fixing of the fine-thread spindle without displacing the spindle.

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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Lumicon Easy Guider with shapley lens

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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Lumicon H-Beta Filter - 1.25"

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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Lunt - Herschelkeil / Sonnenprisma 2''

Item condition: used Item with possible small cosmetic deffect, but every function works perfect

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LUNT B1200d2 Blocking-Filter in 2 inch zenith mirror diagonal

Item condition: new and original packed

Lunt Blockfilter B400 in 2"-diagonal

Item condition: new, but not original packed

LuntSolarSystems - Solar Telescope LS50THa 50 mm H-Alpha with B400 Blocking Filter

Item condition: new and original packed