Achromat
An achromat or an achromatic lens system is understood to mean a lens system in which the focal length is the same at at least two wavelengths. This reduces the effects of chromatic aberrations and spherical aberrations.
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The most common type of achromat is the achromatic doublet, which consists of two lens components that exhibit different degrees of dispersion (color dispersion).
Usually one component is concave (concave) and made of flint glass, and the other is convex (convex) and made of crown glass. Of these two, crown glass has the lowest dispersion.
Other low dispersion glasses can also be used for this purpose. The two lens components were mounted close together, usually even glued together; together they are designed in such a way that the chromatic aberration of one compensates for that of the other.
Celestron Astromaster 70AZ
The 70mm aperture and azimuthal mount make it an excellent travel companion for your first forays into the starry sky. Enjoy Saturn, the bands of Jupiter and the overwhelming amount of stars in star clusters such as M13 and M15. This telescope is also interesting for the advanced amateur astronomer as a travel telescope and can also be used for observing terrestrial objects. The Astromaster 70AZ comes with two eyepieces of 20 and 10 mm, red dot viewfinder, the Celestron Planetarium Starrynight software and an accessory tray.
Celestron StarSense Explorer DX102
Within minutes of setting up the telescope, you’ll be navigating the universe with confidence. Place your phone in the unique StarSense dock and launch the StarSense Explorer app (compatible with Android and Apple). After aligning your phone with the telescope’s optics (a quick 2-minute procedure), StarSense Explorer generates a list of all currently visible celestial objects and the exploration can begin.
Celestron Advanced VX 6-inch refractor
The Advanced VX mount is designed to deliver superior performance while taking advantage of Celestron’s most advanced technologies: All-Star Polar Alignment, Celestron PWI Telescope Control Software, SkyAlign and Permanently Programmable Periodic Error Correction (PPEC).
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Celestron AstroMaster 70AZ met smartphone en maanfilter
Aperture (mm): 70Focal length (mm): 900Speed (f): 13Available -
Celestron StarSense Explorer LT 80AZ
Aperture (mm): 80Focal length (mm): 900Speed (f): 11Available -
Jubileumdeal
DWARF II smart telescoop deluxe uitvoering
Aperture (mm): 24Focal length (mm): 100Speed (f): 4.17Ask us for the delivery time -
Celestron AstroMaster LT 70AZ additional photo adapter moon filter
Aperture (mm): 70Focal length (mm): 700Speed (f): 10Ask us for the delivery time -
Celestron AstroMaster 70AZ
Aperture (mm): 70Focal length (mm): 900Speed (f): 13Ask us for the delivery time -
Celestron AstroMaster 70 EQ refractor
Aperture (mm): 70Focal length (mm): 900Speed (f): 13Available -
Celestron AstroMaster 80AZ Short telescoop
Aperture (mm): 80Focal length (mm): 400Speed (f): 5Available -
Celestron AstroMaster 80EQ met motordrive
Aperture (mm): 80Focal length (mm): 900Speed (f): 11Available -
Celestron StarSense Explorer LT 70AZ
Aperture (mm): 70Focal length (mm): 700Speed (f): 10Available -
Celestron StarSense Explorer DX 102AZ
Aperture (mm): 102Focal length (mm): 660Speed (f): 6.5Available -
Celestron AstroMaster 90AZ
Aperture (mm): 90Focal length (mm): 1000Speed (f): 11Ask us for the delivery time -
Offers
Celestron AstroMaster 90EQ
Aperture (mm): 90Focal length (mm): 1000Speed (f): 11Available -
Celestron Advanced VX 6 inch Refractor
Aperture (mm): 150Focal length (mm): 1200Speed (f): 8Ask us for the delivery time -
Celestron Astro Fi 90 Refractor telescoop
Aperture (mm): 90Focal length (mm): 910Speed (f): 10.1Ask us for the delivery time -
Celestron Inspire 80AZ refractor telescoop
Aperture (mm): 80Focal length (mm): 900Speed (f): 11Ask us for the delivery time -
Celestron Inspire 100 refractor telescoop
Aperture (mm): 100Focal length (mm): 660Speed (f): 6.6Available -
Offers
Celestron NexStar 102SLT
Aperture (mm): 102Focal length (mm): 660Speed (f): 6.47Available -
Black Friday Deal
Celestron PowerSeeker 60AZ telescoop
Aperture (mm): 60Focal length (mm): 700Speed (f): 12Available -
Celestron Powerseeker 60EQ
Aperture (mm): 60Focal length (mm): 900Speed (f): 15Ask us for the delivery time -
Celestron TravelScope 70 telescoop
Aperture (mm): 70Focal length (mm): 400Speed (f): 5.7Available