Celestron Rowe Ackermann 11 inch RASA telescoop V2

 4.295,00

Celestron Rowe Ackermann 11 inch RASA

Op voorraad (kan nabesteld worden)

Opening (mm):
279
Brandpuntafstand (mm):
620
Snelheid (f):
2.2
Maximale resolutie (arcsec/pixel):
0.41
Image circle (mm):
43.3
Grensmagnitude:
14.93
Coatings:
Starbright XLT
Montering:
Geen
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Beschrijving

Celestron Rowe Ackermann 11 inch RASA V2

Capturing impressive deep-sky astroimages is easier than ever with Celestron’s Rowe-Ackermann Schmidt Astrograph (RASA) V2, the perfect companion to today’s top DSLR or astronomical CCD cameras. This fast, wide-field f/2.2 system allows for shorter exposure times compared to traditional f/10 astroimaging, without sacrificing resolution. Because shorter sub-exposure times are possible, your equatorial mount won’t need to accurately track over extended periods. The short focal length also lessens equatorial tracking demands. In many cases, autoguiding will not be required.

RASA 11 V2 builds on the legacy of Celestron’s Schmidt Cameras, which allowed astrophotographers to produce images with much shorter exposure times on film in the 1970s.

Today, with CCD sensor sizes as large as film or larger, the RASA 11 V2 offers a 43.3mm optimized image circle to capture pinpoint stars on the largest imaging chips. Optical performance for huge sensors with diagonals of up to 52mm wide is still excellent.

Combine this large image circle with a focal length of just 620mm and you have an instrument suitable for wide-field imaging, creating huge mosaics of the night sky, surveying, and even comet hunting.

Optical Performance
The RASA 11 V2 features optics with 4-element rare-earth glass for images free of false color and aberrations like coma and field curvature. The optical quality and spot size across the entire image circle are unprecedented for an astrograph in this price range—or even that of a much more expensive instrument. The design also provides minimal vignetting.

Advanced Features
RASA 11 V2 utilizes the new Ultra-Stable Focus System (USFS). At the heart of this system is a precision linear ball bearing. The bearing serves to minimize focus shift (unwanted lateral motion of the primary mirror during focusing which causes shifting of the image) and mirror flop (movement of the primary mirror when the telescope is pointing to different positions in the sky). The USFS is also compatible with the optional Celestron Focus Motor (#94155-A). The integrated 12V DC MagLev fan reduces cooldown time and provides optimal airflow through the dust filtered optical tube.

Engineered as a complete astroimaging system, every component of the RASA 11 V2 is optimized for peak performance with DSLR and astronomical CCD cameras. Down to the thickness of the glass used in the included fully-multicoated optical window or optional imaging filter, every component of the system has been taken into careful consideration to work together seamlessly. The Dovetail CGE bars on the top of the optical tube provides a connection for use of optional accessories like a guidescope.

Key Features of the Celestron Rowe Ackermann 11 inch RASA telescoop V2 are:

  • Fast, wide-field 11” f/2.2 optical design with rare-earth glass for images free of false color, coma, and field curvature
  • Large 43.3mm optimized image circle maintains pinpoint stars to the far corners of even the largest astroimaging sensors, while the usable field extends even further to 52mm for larger format sensors
  • New Ultra-Stable Focus System (USFS) minimizes focus shift and mirror flop
  • Integrated air-cooling system features a quiet, high-output 12V MagLev fan and vents with mesh filters to prevent dust ingress
  • Common camera adapters (T-thread and M48) included for easy attachment to popular CCD and DSLR cameras

 

Specificaties algemeen

Staat:
Nieuw

Merk:
Celestron

Serie:
RASA

Garantie:
2 jaar

Artikelnummer Ganymedes:
C91076

Artikelnummer fabrikant:
91076


Specificaties product

Opening (mm):
279

Brandpuntafstand (mm):
620

Snelheid (f):
2.2

Maximale resolutie (arcsec/pixel):
0.41

Image circle (mm):
43.3

Grensmagnitude:
14.93

Coatings:
Starbright XLT

Montering:
Geen

GOTO:
Nee

Focuser type:
Overige

Focuser maat:
Niet van toepassing

Focuser roteerbaar:
Niet van toepassing

Focuser fijninstelling:
Nee 1 op 1

Kleur:
Wit

Type:
Rowe-Ackermann Schmidt Astrograph

Type optiek:
Catadioptrisch

Tube materiaal:
Aluminum

Tube gewicht (kg):
19.5

Tube lengte (mm):
838.2

Tube diameter (mm):
330.2

Meegeleverde zoeker:
Nee

Meegeleverde oculairs:
Nee

Meegeleverde diagonaal:
Nee

Meegeleverde statief/montering:
Nee


Toepassing

Geschikt voor astrofotografie:
Uitstekend

Geschikt voor maan en planeten:
Matig

Geschikt voor nevels en sterrenstelsels:
Uitstekend

Geschikt voor zon:
Onbekend

Geschikt voor Panorama of Penthouse:
Matig

Geschikt voor kinderen:
Nee

Geschikt voor beginnende gebruiker:
Nee

Geschikt voor gevorderde gebruiker:
Ja

Geschikte accessoires

Voor dit product hebben wij nog geen geschikte accessoires geselecteerd.
Eventuele geschikte accessoires worden door ons zorgvuldig geselecteerd en handmatig toegekend.
Neem contact met ons op als je wilt weten welke accessoires goed zijn geschikt met dit product!

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Categorieën

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