Secondhand & Stock

Takahashi Adapter Set M74-M43-M36.4-1.25" for 2.7" focuser

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

Wichtiger Hinweis zur Mehrwertsteuer:
Dieses Angebot unterliegt mit Ausnahme der Versandkosten gemäß § 25a UStG der Differenzbesteuerung, weshalb auf den angebotenen Artikel keine Umsatzsteuer erhoben und ausgewiesen wird.

Altair QuadBand is the new trend in light pollution filters for deep-sky imaging of emission nebulae with colour CMOS, CCD, and DSLR cameras. Altair V2 Filter Technology produces even better blocking of unwanted wavelengths, higher transmission, and no halos. The result is a better signal to noise ratio for imaging emission nebulae with a DSLR or CMOS Astro camera. The 35nm passband not only makes the QuadBand V2 compatible with fast focal ratio lenses and telescopes, but also allows visual use with a relatively small telescope in urban locations. Brighter emission nebulae can be observed in urban conditions with a darker background. This is the new QuadBand V2 Coating technology which includes: Anti-Halo coating on both surfaces to reduce reflection artefacts from reducers and camera lenses. Increased blocking of UV, IR and unwanted visual range wavelengths. UV OD7 (T0.00001%) Visual OD5 (T0.001%) and IR OD4 (T0.01%) for the ultimate in skyglow blocking. An order of magnitude better than foreign filters. Higher transmission % of desired wavelengths Ttop 95% (Average 5% higher transmission of desired wavelengths). Ha and Oiii wavelengths at 35nm FWHM for with less tail-off to reduce unwanted light pollution. It's even compatible with fast scopes, like Altair F6 refractors which operate at F4.8 with reducers, and the F2 Celestron RASA and Hyperstar. Includes UVIR blocking for both modified and un-modified DSLR cameras, plus an anti-reflection coating to reduce halos as much as possible. Narrowband Bi-Colour imaging is a growing new trend in astrophotography, especially popular in light polluted areas, or for imaging in rural areas in moonlight. Now you can capture the two main emission nebulae bands at the same time, whilst suppressing light pollution, moonlight, and airglow. Capture more data in less time, and open up your imaging time window - even into the summer months. Altair QuadBand light pollution filters work by isolating the primary nebulae emission zones in the red and blue/green wavelengths, and separating them into two main "zones" with a wide separation for easy capture with a colour camera - all in one exposure! Not only is capture very convenient, but processing is easy too, thanks to the wide separation of the green/blue and red "zones". Light pollution control is extremely effective and LED light is also significantly reduced, thanks to the effects of Rayleigh scattering. Sensitive OSC or "One Shot Colour" CMOS cameras like the #Hypercam183C capture these wavelengths very efficiently, and allow them through the Bayer matrix. The filters also work with DSLRs (APS-C sensor size modified cameras are best, but normal ones will also work). When you have the complete stack of exposures, processing is relatively easy because of the large separation in colour. You can also use the Quad band and Tri-Band filters as a "super luminance filter" for imaging nebulae with Mono cameras. A quick overview of the Altair Filter family: QuadBand Filter - combines Sii AND Ha into a red zone, and H-beta + Oiii into a green/blue zone. (Recommended for moderate light pollution and skyglow, used with colour cameras). TriBand Filter - combines Ha into a red zone, and H-beta + Oiii into a green/blue zone. (Recommended for higher light pollution, used with colour cameras). DualBand Filter - separates the red Ha and blue Oiii channels even more distinctly with even deeper blocking. (Recommended for severe light pollution such as within built-up areas such as cities. Used with colour cameras). NarrowBand mono camera filter - these isolate single bands, so you only capture one wavelength per filter such as Oiii or Ha or Sii, and they are mostly used with mono B&W astronomy cameras. Separate sets of exposures are required with each filter. Filter Specifications: 1st band, CWL495nm FWHM35nm 2nd band, CWL 660nm FWHM 35nm 1.85mm thick optical glass with 30 arc sec parallelism. UVIR Block and Anti-Reflection Coating. Scope of Delivery: Filter 2"

Item condition: new, but not original packed

Zeiss Jena , made in DDR, Q1 Marking, T-Mount with couterweight, all mechanics working perfect, no bend , price per 1 pc

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

Wichtiger Hinweis zur Mehrwertsteuer:
Dieses Angebot unterliegt mit Ausnahme der Versandkosten gemäß § 25a UStG der Differenzbesteuerung, weshalb auf den angebotenen Artikel keine Umsatzsteuer erhoben und ausgewiesen wird.

Zeiss Jena Refraktor Telementor with M44 Helikalfocuser with visible spurios of use, price per 1 pc

Item condition: used, but with visible cosmetic markings

Wichtiger Hinweis zur Mehrwertsteuer:
Dieses Angebot unterliegt mit Ausnahme der Versandkosten gemäß § 25a UStG der Differenzbesteuerung, weshalb auf den angebotenen Artikel keine Umsatzsteuer erhoben und ausgewiesen wird.

Svbony SC001 is a WiFi electronic camera for spotting scopes, with generates wifi hotspot, It could be connected with mobile phone via APP, people could capture photos and video on the APP directly, and share to social media asap. The photos or videos file could be saved to the TF card included, and downloaded to the mobile phone, more convenient to edit on a mobile phone and share with your friends.(SC001WiFi camera supports Android and iPhone.) External power supply voltage and current (DC5V 1A) A better viewing experience awaits! Feature: Universal Spotting scope WIFI Camera The device generates its own Wi-Fi Hotspot Mobile phone App, the app is a full-featured software application available for free Universally Mounts directly to spotting scopes with 1.25-inch diameter eyepiece Rechargeable LiPo Battery (estimated 1500mAh for 3-4 hour battery life) Compatible with current Svbony Camera App Capture pictures/videos directly through phone APP, then download and share to social media asap.

Item condition: new, but not original packed

Coronado 1.25" Hot Mirror , 1.25" diagonal with red glas filter. The diagonal hot mirror is likely a dichroic mirror that acts just like a long-pass filter, reflecting a percentage of the Ha and transmitting/absorbing shorter wavelengths. it was delivered with Coronados BF 30 straight block filter

Item condition: new, but not original packed

Glas with crosshair as insert for Zeiss Jena Ortho Or-40, M44

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

Wichtiger Hinweis zur Mehrwertsteuer:
Dieses Angebot unterliegt mit Ausnahme der Versandkosten gemäß § 25a UStG der Differenzbesteuerung, weshalb auf den angebotenen Artikel keine Umsatzsteuer erhoben und ausgewiesen wird.

UltraWide Binocular Leitz/Wetzlar-Germany 6 x 24 Trinovid 212m/1000m with bag, Serial Nr. 641531 , made in the 60ths, FOV 12,1 degree, subject eyepiece field of view 72,7 degree

Item condition: used, but with visible cosmetic markings

Wichtiger Hinweis zur Mehrwertsteuer:
Dieses Angebot unterliegt mit Ausnahme der Versandkosten gemäß § 25a UStG der Differenzbesteuerung, weshalb auf den angebotenen Artikel keine Umsatzsteuer erhoben und ausgewiesen wird.

Farpoint Bahtinov Maske fürCelestron 8" Schmidt Cassegrains und EHD8 Cassegrains ... für genauestes Scharfstellen bei Astrofotografie Farpoint Bathinov Maske Bahtinov Masken ermöglichen ein hochgenaues Scharfstellen bei Astrofotografie. Sie sehen eindeutig, wann Sie die optimale Schärfe erreicht haben - kein langwieriges herantasten ist mehr nötig. Die Maske ist passend für: -Celestron Schmidt Cassegrains mit 8" Öffnung -Celestron EHD8 Mit etwas Bastelaufwand kann die Maske natürlich auch an andere Teleskope ähnlicher Öffnung adaptiert werden. So funktioniert das Scharfstellen mit der Bahtinov Maske: Arbeiten mit der Bahtinov Maske Bild links und Bild rechts - innerhalb / außerhalb des Fokus - die zentrale Linie ist verschoben Bild mitte - Die zentrale Line verläuft genau durch die Mitte des Sterns - die optimale Schärfe ist erreicht.

Item condition: new, but not original packed

Refractor with Carl Zeiss Jena AS 63/840 Objectiv, Tube covered with carbon foil, nice focuser, tube clamp, illuminated dot finder, sun finder. Optic is a bit dirty and partly damaged coating, but very nice optics

Item condition: used, but with visible cosmetic markings

Wichtiger Hinweis zur Mehrwertsteuer:
Dieses Angebot unterliegt mit Ausnahme der Versandkosten gemäß § 25a UStG der Differenzbesteuerung, weshalb auf den angebotenen Artikel keine Umsatzsteuer erhoben und ausgewiesen wird.

Orion tube rings - aluminium - for tubes with D=100 mm Stable tube mounting rings with hinge The rings have a flat support surface on both sides. At the base of the rings there is an M6 female thread for attachment to a dovetail bar or to the top plate of the mount. On the opposite side of one ring you will find a female thread (1/4" photo thread), on the one of the other a male photo thread with counter ring for attaching a camera. The rings have a felt lining to protect the telescope tube.

Item condition: new, but not original packed

With this handle holder the mount can be easily turned in all directions. Scope of delivery: PanTilt Handle Mount

Item condition: new, but not original packed