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Astronomy > Telescopes > BORG > BORG Apochromatic refractor AP 90/350 FL OTA mit ESATTO
Product no.: 74050

Apochromatic refractor AP 90/350 FL OTA mit ESATTO

$ 4,730.00 incl. VAT, plus shipping costs
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Product description

This wonderful apochromatic refractor with fluorite optics offers an incredible f3.9 focal ratio and it has a very large 55mm flat field to allow the use of cameras also equipped with very large sensors, even larger than Full Frame. The carbon tube makes the Borg fluorite 90FL f3.9 PLUS the more compact and lightweight 90mm apochromatic refractor on the market, very easy to transport!

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
Refractor
Type of build
Apochromat
Aperture (mm)
90
Focal length (mm)
350
Aperture ratio (f/)
3,9
Resolving capacity
1,53
Limit value (mag)
11,6
Light gathering capacity
170
Max. useful magnification
180
Tube material
Carbon
Tube weight (kg)
3,7
lens design
Quadruplet

Focuser


Type of build
Gear rack
Connection ( to eyepiece)
3
Free aperture (mm)
76
Gear reduction
without
Rotating
yes
Backfocus (mm)
60
Connecting threaded socket (camera-side)
M57

Mount


Mounting type
no mount
Type of build
OTA

Included accessories


Corrector
integrated
Dew Shield
yes
Tube clamps
yes
Carry case
no
Prism rail
without
finder base
without
focusing help
yes

Area of application


Astrophotography
yes (very good)

Recommended for


Beginners
no
Advanced
yes
Observatories
no

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*All prices include VAT plus shipping costs.

BORG Apochromatic refractor AP 90/350 FL OTA mit ESATTO
BORG Apochromatic refractor AP 90/350 FL OTA mit ESATTO
BORG Apochromatic refractor AP 90/350 FL OTA mit ESATTO

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