On stock

Explore Scientific 30 mm 100° Eyepiece with 3" Socket, weight 2.3 kg

Item condition: new, but not original packed

Explore Scientific 1,25" O-III Filter

Item condition: new, but not original packed

Product description OCAL Electronic Collimator OCAL - New Generation Electronic Collimator The revolutionary way to collimate your instrument is with OCAL, the new smart device that allows you to collimate your Newtonian telescope via your computer in a simple, precise and fast way. The collimation of a reflecting telescope is a problem that astronomers must solve. OCAL electronic collimator is an electronic device developed by Chaoxing Astronomy to calibrate the collimation of reflective telescopes. Its main function is to mark several calibration circles through software to achieve the purpose of collimation. Difference between OCAL and OCAL PRO OCAL OCAL PRO Laptop Use (for Windows) Yes Yes Android/ iOS via OTG Adapter No Yes Newton Collimation Yes Yes SC Collimation No Yes RC Collimation No Yes (test mode) Main Features Each collimator has a very high level of pixel accuracy, thanks to OCAL high quality control. The installation takes place via T2 thread (M42x0.75) to minimize the installation errors. Collimation errors that are often caused by human different visual axis can be completely eliminated with OCAL technology. The product solves the problem of collimation even on large telescopes, thanks to the collimation assistance feature the result is shown immediately on the screen. Quick and easy: Collimate your instrument in just 4 steps! The product can check if the center mark on the primary mirror is made correctly or not. You can also use the screenshot feature to save the result of the collimation. Scope of Delivery: Collimator cable Tips and tricks: If the screen goes black after a few seconds in the Android version. Place your finger on the app icon. Select App Info. In the sub-item Other authorisation, tick the box for Display on lock screen. If the Windows version cannot be installed on your computer, please install the corresponding software from the OCAL download folder. This is called VC_redist.xt.x64 or VC_reddist.x86. Please choose the version for your operating system. In some cases it is necessary to download the missing DLL file from microsoft. Unfortunately, some computers are missing the necessary service packs. You can find the files here: https://www.microsoft.com/de-DE/download/details.aspx?id=26999

Item condition: new and original packed

EA20-205P—2.0" to 1.25" Eyepiece Centering Adapter; Threaded for 2" filters (and long enough the 1.25" barrels won’t hit the filter) Nylon-tipped thumb screw for non-marring binding, angled down to push the eyepiece down into the adapter Zero height so extra in-travel of the focuser will not be necessary (important when little in-travel is left) Inserted accessories are self-registering with perfect alignment to the focuser The adapter is self-registering to the focuser for perfect alignment Accommodates all 1.25" accessories, even with small variations in outside diameter - no accessory will be loose or wobble!

Item condition: new and original packed

Dr. Hans Vehrenberg Photographic Star Atlas Vol. 1 + 2; 4°, star charts in black folding boxes, each with chart sheets, accompanying booklet and transparencies, very good condition Language: German. For the northern sky between the pole and 26° southern declination. 303 star charts with coordinates for the equinox 1950.0, 1st edition 1962, self-published by Düsseldorf, Schillerstrasse 17.

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.

Planisphere Watch. Model KWI‐STAR ‐ A Planetarium on your wrist! ‐ Align the bezel with the

Item condition: new and original packed

Deep Sky Reiseatlas

Item condition: new and original packed

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.

Crayford 3" focuser with 1:10 reduction, 360° rotation. With connection adapter with 108mm threaded connection.

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

Concenter VISUS - Precise adjustment despite glasses

Item condition: new and original packed

Concenter SE 1.25 Zoll

Celestron TrailSeeker ED 8x32mm roof-prism BaK4 binoculars

Item condition: new and original packed