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Telescopes > OPT > OPT Apochromatic refractor Radian AP 61/275 Raptor OTA
Product no.: 68993

Apochromatic refractor Radian AP 61/275 Raptor OTA

$ 2,280.00 Sale price:
$ 2,046.90 incl. VAT, plus shipping costs
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Product description

  • The ultimate portable astrophotography telescope
  • Comes with multiple upgraded components as standard for a complete, turnkey package
  • 61mm aperture, 275mm focal length, f/4.5 system
  • Premier apochromatic triplet optics for pristine image quality
  • Custom Radian Hex Rings with integrated cable management channels
  • Huge full frame image circle with the included Corrector for sharp stars across the image on DSLRs, mirrorless, and dedicated astronomy cameras
  • Comes with a 4" V-style dovetail & a Radian 6.5" universal D-style plate to ensure compatibility with any mount out of the box
  • Additional included accessories consist of a 10:1 factory-tuned rack & pinion focuser with a 2" Filter vault, a 360º rotator, a Radian padded-insert travel backpack, dew shield, dust covers, and more
  • designed by Trevor Jones from AstroBackyard

High-Quality Glass

The Raptor 61 features an apochromatic triplet optical design with premium glass and multi-coatings to tackle chromatic aberration with ease, leading to an ultra-clean overall image without the nuisance of reflections.

Wide Field of View

The 275mm focal length is simultaneously excellent for widefield imaging and highly forgiving, making it the perfect choice for both beginners and experts. Targets like the entire Veil Nebula and the Orion & Horsehead Nebula together can fit easily into frame on up to full frame sensors.

Dedicated Corrector

With the Raptor 61, there's no need to buy an additional reducer/flattener. The dedicated, factory-matched corrector that comes as standard is intended to be used as an always-on solution for imaging. The corrector's three-element design provides correction for sensors as large as full frame, so no matter which camera you use, pinpoint stars can be seen across the image.

Specifications

Optics


Tube weight (kg)
1,8
Resolving capacity
2,26
Type of build
Apochromat
Focal length (mm)
275
Limit value (mag)
12,3
Light gathering capacity
80
Max. useful magnification
122
Aperture (mm)
61
Aperture ratio (f/)
4,5
Tube material
Aluminium
Type
Refractor
Tube length (mm)
235
Tube construction
Full tube
lens design
Triplet
tube diameter (mm)
90

Focuser


Gear reduction
1:10 fine focusing
Adjustment range (mm)
55
Type of build
Gear rack
Free aperture (mm)
44
Connecting threaded socket (camera-side)
M48
Connection ( to eyepiece)
2

Mount


Mounting type
no mount
Type of build
OTA

Included accessories


Miscellaneous
Carry case
Dew Shield
yes
Corrector
integrated
Tube clamps
yes
Prism rail
Vixen-Style
Finder scope
without
Deviating optics
no
Eyepiece adaptor
1,25" & 2"
Thread for camera tripod
yes

General


Total weight (kg)
2
Colour
black
Variant name
Radian

Area of application


Astrophotography
yes (very good)
Moon & Planets
yes
Nature Observation
not recommended
Nebulae & galaxies
yes

Recommended for


Beginners
no
Advanced
yes
Observatories
no

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*All prices include VAT plus shipping costs.

OPT Apochromatic refractor Radian AP 61/275 Raptor OTA
OPT Apochromatic refractor Radian AP 61/275 Raptor OTA
OPT Apochromatic refractor Radian AP 61/275 Raptor OTA
OPT Apochromatic refractor Radian AP 61/275 Raptor OTA
OPT Apochromatic refractor Radian AP 61/275 Raptor OTA
OPT Apochromatic refractor Radian AP 61/275 Raptor OTA
OPT Apochromatic refractor Radian AP 61/275 Raptor OTA
OPT Apochromatic refractor Radian AP 61/275 Raptor OTA

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