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Telescopes > Celestron > RASA > Celestron Telescope Astrograph S 279/620 RASA 1100 V2 OTA
Product no.: 66036

Telescope Astrograph S 279/620 RASA 1100 V2 OTA

$ 4,660.00 incl. VAT, plus shipping costs
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  • Optimised for astrophotography
  • Portable for mobile use

Product description

More about the series RASA...

Digital Schmidt camera for wide angle astrophotography!

This astrograph makes it very easy to create stunning photos with a modern DSLR or astronomical CCD camera. The new optical design has a four-lens corrector, incorporating rare earth glass, which suppresses chromatic aberrations and other problems such as coma and field curvature. Never before has an astrograph in this price range delivered such optical quality and spot size over the entire image field. The design also allows for a very low vignetting.

  • super-fast 11" f2.2 optics - sharply images APS format and is even optimized for sensor sizes up to a 70mm field diagonal.
  • extremely short exposure times - the RASA Astrograph acquires images twenty times faster than at f10! Thirty seconds at f2.2 correspond to ten minutes at f10 - tracking control is hence superfluous!
  • huge field of view - with a 620mm focal length, makes wide-angle shots a piece of cake and you and always have an overview
  • excellent focusing mechanism - new bronze bearings reduce image shift, the 10:1 FeatherTouch micro-focuser allows highly precise focusing!
  • innovative Features - quieter 12V MagLev fan reduces the cooling phase, keeps out dust and allows optimum air circulation in the OTA. Various adapters for popular camera brands are included. Back focus for the camera supplied adapters: 55mm, back focus for the front lens group: 69.26mm

RASA stands for Rowe-Ackermann-Schmidt Astrograph - Dave Rowe and Mark Ackermann are renowned optical instrument designers. Together, they hold numerous patents on their inventions. The RASA astrograph combines their expertise and experience.

The new version V2 is equipped with the Ultra Stable Focus System (USFS). It is focused by moving the primary mirror. So that there is no image shifting and tilting, focussing is controlled via a precise linear ball bearing system.

Focussing can be achieved using the Celestron focussing motor.

Which cameras is the RASA 1100 suitable for?

This Schmidt astrograph offers an image circle of fully 43mm, so you get pin sharp stars even on large sensors - up to 52mm is usable. This large illuminated image circle and a focal length of only 620mm make this the perfect instrument for astrophotography of large areas of the night sky and extended astronomical objects. For example, you can create mosaics of the entire night sky or look for varaible stars, supernovae or comets.

It not only matters which telescope you buy but also where you buy it. Our additional services:

  • We are a leading telescope dealer and know the devices we sell. Our customer service team will gladly help you after your purchase if you have problems with assembly or operation.
  • We provide a copy of the 80-page Telescope ABC beginners handbook with every telescope.
  • We also provide an edition of the exciting astronomy magazine, “Sterne und Weltraum” with each telescope.

Specifications

Optics


Type
Reflector
Type of build
Astrograph
Aperture (mm)
279
Focal length (mm)
620
Aperture ratio (f/)
2,22
Resolving capacity
0,41
Light gathering capacity
1588
Tube length (mm)
840
Coating
Starbright XLT
Tube material
Aluminium
Tube weight (kg)
15,9
Tube construction
Full tube

Reflector


Secondary mirror obstruction
41
Secondary mirror diameter (mm)
114
Ventilation for central mirror
yes

Focuser


Backfocus (mm)
72,8mm & 55m
Gear reduction
without
Type of build
primary mirror focusing
Connecting threaded socket (camera-side)
M48

Mount


Mounting type
no mount
Type of build
OTA

Included accessories


Prism rail
Losmandy-Style
Camera adaptor
T2 (M42 x 0,75)
Finder scope
without
Battery compartment
yes
Carrying handle
yes

General


Series
RASA

Area of application


Moon & Planets
no
Nebulae & galaxies
yes
Nature Observation
no
Astrophotography
yes
Sun
no

Recommended for


Beginners
no
Advanced
yes
Observatories
yes

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*All prices include VAT plus shipping costs.

Celestron Telescope Astrograph S 279/620 RASA 1100 V2 OTA
Rear View - the telescope has been optimized for astrophotography and has no focuser.
Celestron Telescope Astrograph S 279/620 RASA 1100 V2 OTA
Cross-section through the light path
Celestron Telescope Astrograph S 279/620 RASA 1100 V2 OTA
Included accessories

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