Focuser and Focuser accessories

Motorized focusing from JMI for Celestron C8, C9,25, EHD800 und EHD925 telescopes ♦ Allows precise focusing with a motor ♦ The speed is continously adjustable ♦ The direction can be set with a toggle switch. ♦ Motor, hand controller and material for adapting to the telescope are included ♦ Connection to the telescope can be achieved within minutes. ♦ Powered by 9V battery in the hand box ♦ USB ports and complete remote control via computer or as stand-alone system can be retrofitted

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.

Meade Field Derotator Assembly, Model 1222 for 16" LX 200 with USB Cable ; This is the only field derotator made for the Meade 16" SCT. Full functioning and in excellent condition. The #1222 has a larger clear aperture than other Rotators Meade's #1222 Field De-Rotator allows long exposure times to yield sharp images while your telescope is being used in the altazimuth mode. Typically with astrophotography in the altazimuth mode, your exposure will be limited to a maximum of 5 minutes. Beyond this arbitrary 5 minute barrier, and often before it, the rotation of the field visibly turns stars in the image into unattractive curved streaks. This occurs because when your telescope is in altazimuth mode it is not rotating around the same axis as the planet itself. Rotating upon the celestial pole(the axis the Earth is based upon) is not crucial for lunar and planetary astrophotography, because the exposures needed for these subjects are short enough to make it appear unimportant. Deep space exposures of galaxies and nebula, however, are another matter. There are two options for preventing stars from streaking during long exposures: you can mount your scope upon an equatorial wedge and use the scope in the equatorial mode, or you can employ a field derotator. The Meade #1222 Field De-Rotator integrates with your telescope's Autostar II computer exclusively for imaging in the altazimuth mode, and is not used with the scope mounted upon an equatorial wedge. The Autostar determines the amount of field rotation during the exposure based upon the region of the sky being imaged, and automatically rotates the field derotator (along with its attached camera) in the opposite direction by the exact amount needed to compensate for the field rotation. Many users prefer a field derotator to employing an equatorial wedge because they have one less heavy chunk of equipment to carry into the field as well as less time aligning the scope. A field derotator also allows a broader declination range than a wedge, and less chance of interference between your mount and eyepiece-side accessories.

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.

William Optics 3.5" ROTO-LOCK FOCUSER NEW heavy duty DDG Focuser the Digital Display Gauge - DDG - allows you to take precise focusing readings down to two decimals precision instantly. This premium 360°-rotatable focuser uses the new Rotolock-system for heavy load applications a SILK-SMOOTH 2-speed microfocuser a 2"-1.25"-adapter and a thermometer installed into focuser knob! Connection tube inside 103 mm Extension outer diameter 114 mm Total length 149 mm Weight 2334 gram

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.

Eyepiece focuser with gear drive 82 mm, presumably from Wachter, weight 4100 grams, 180 mm focusing travel, diameter of mounting flange 148 mm, shortest overall length 140 mm, including 2" Baader clamp. Manufacturer unknown, probably Wachter

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.

Astro-Physics/USA 4" focuser from 206 mm EDF Apo ; for tube side outer diameter 137 mm ; focusing distance 105 mm ; , adapter 109 mm to 2" inner plug with 46 mm length ; minimum length fully retracted without extension 210 mm ; maximum length fully extended 315 mm , complete weight 4240 grams

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.

Astro-Physics/USA 4" focuser from 206 mm EDF Apo ; for tube side outer diameter 137 mm ; focusing distance 105 mm ; 56 mm bayonet extension with 109 mm diameter , adapter 109 mm to 2" female connector with 46 mm length ; minimum length fully retracted without extension 210 mm ; maximum length fully extended 370 mm , complete weight 4739 grams

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

This focuser is more stable and more accurate than usual Crayford focusers. We recommend the focuser especially for astrophotography. ♦ Telescope connection: M90x1 thread (female) with 360° rotation. ♦ Individual telescope connection possible via the optional adapter Sonder-M90. ♦ Eyepiece side connection: 2" and 1.25" receptacle with compression ring ♦ Minimal height to M90 thread: 90 mm ♦ Draw tube travel: 50 mm ♦ Dual speed 1:10 for accurate focusing ♦ Bearing via stainless steel rail - absolutely free from twisting ♦ Central locking of the draw tube, guaranteed without tilting

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

3" Crayfors focuser, incl. 2" eyepieceadapter, 360° rotation, M68 female thread

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

Telescope Eng. Co. 3.5" focuser with 2" / M68 Baader Clickclock with retaining ring for tube, 1:10 microfocusing, 105 mm focusing distance, inner diaphragms for stray light suppression, weight 2218 grams, length 140 mm, focuser end adapter to M68 female thread.

Item condition: new, but not original packed

Skywatcher 2 "Newton rack and pinion with curved base for 200 mm Newton

Item condition: new, but not 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.

Teleskop-Service 3" 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.