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Borg Fast Astrographs

Japanese made Borg telescopes and accessories are available now from 365Astronomy.

These Japanese optics of superior quality offer fast imaging...

Various optical systems are available at f/3.6, f/3.9 and f/5.6., but always the highest quality.

Shrtly we will also offer bundles with Primaluce Lab Eagle and some premium telescope mounts as well.

Products

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$Borg Fluorite Apochromatic Refractor 107FL f3.9 with ESATTO 3" Motorised Focuser$

£5215.00

Low stock (1)

SKU: BORG10739EST3

Borg

Borg Fluorite Apochromatic Refractor 107FL f3.9 with ESATTO 3" Motorised Focuser

		(0 reviews)

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...

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$Borg Fluorite Apochromatic Refractor 55FL f3.6 PLUS$

£1775.00

Low stock (1)

SKU: BORG5536FTF-SB

Borg

Borg Fluorite Apochromatic Refractor 55FL f3.6 PLUS

		(0 reviews)

The Borg fluorite apochromatic refractor 55FL f3.6 PLUS uses 6-element fluorite optical design for a perfect chromatic aberration correction, generating images without false colors, contrasted and rich in details, in a large...

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$Borg Fluorite Apochromatic Refractor 90FL f3.9 with ESATTO 3" Motorised Focuser$

£4675.00

Ask about stock

SKU: BORG9039EST3

Borg

Borg Fluorite Apochromatic Refractor 90FL f3.9 with ESATTO 3" Motorised Focuser

		(0 reviews)

Borg fluorite apochromatic refractor 90FL f3.9 with ESATTO 3", 90mm diameter, 350mm focal length (f3.9), 6 elements fluorite apochromat, carbon fiber tube with 3 inches ESATTO focuser, rear thread for camera connection,...

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New Arrivals

$Borg Fluorite Apochromatic Refractor 90FL f3.9 with ESATTO 3" Motorised Focuser$

£4675.00

Ask about stock

SKU: BORG9039EST3

Borg

Borg Fluorite Apochromatic Refractor 90FL f3.9 with ESATTO 3" Motorised Focuser

Added: 03/10/2019

		(0 reviews)

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$Borg Fluorite Apochromatic Refractor 107FL f3.9 with ESATTO 3" Motorised Focuser$

£5215.00

Low stock (1)

SKU: BORG10739EST3

Borg

Borg Fluorite Apochromatic Refractor 107FL f3.9 with ESATTO 3" Motorised Focuser

Added: 03/10/2019

		(0 reviews)

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$Borg Fluorite Apochromatic Refractor 55FL f3.6 PLUS$

£1775.00

Low stock (1)

SKU: BORG5536FTF-SB

Borg

Borg Fluorite Apochromatic Refractor 55FL f3.6 PLUS

Added: 02/03/2019

		(0 reviews)

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News

10/01/2020

I'd like to let you know that we've just received a big shipment of various ZWO products.
New series of full frame cameras are available from ZWO now.
We got the ASI6200 MONO and COLOUR full frame cameras, the APS-C sized ASI2600MC-PRO that is only available in colour, and the ASI533MC-PRO is back in stock again. As the ASI6200MM-PRO is the first full frame monochrome camera of ZWO, they also developed appropriate accessories for this, i.e. 2" filter wheels (5 and 7 position versions), M68 OAG (Off Axis Guider adapter), 2" LRGB filters and 2" narrowband filters (7nm H-alpha, OIII and SII).
All these also arrived, except the narrowband filters that we expect a bit later.

You might have also noticed that we listed various Astrotrac products recently. We will receive stock at Astrofest at the end of the month and there will be a special introductory promotion of these at Astrofest, so if you wanted the finest and probably most beautifully engineered mount on Earth, come and visit us at Astrofest.

All news

Reviews

$Baader 2" BDS-RT Diamond Steeltrack RT Focuser for Refractor Telescopes$

Baader 2" BDS-RT Diamond Steeltrack RT Focuser for Refractor Telescopes

Fitting a 2-inch BDS-RT Baader Diamond Steeltrack Focuser to a Teleskop-Service GSO 8-inch Ritchey-Chretien Background The TS 8-inch RC has M90x1mm connections at the focuser end of the scope. My setup has a TS 50mm extension adapter with for 6- & 8-inch RC connected to the scope (TS part no: GSRCV50), to accommodate the long back-focus. Attached to this is a TS M90 tilting adapter flange (TS part no: GSRCJ90). This is an aid to collimation and allows the long axis of the focuser to be aligned with the optical axis of the scope. I then have a standard TS monorail focuser for the RC, again with an M90x1 connection. Image 1 shows the 50mm extension and tilting flange, with the old focuser removed. Note the M90 male thread at the end of the flange, to which the focuser connects. Fitting the Baader Diamond Steeltrack RT It is assumed that the reader has access to the Steeltrack manual and has purchased the necessary RT-Adapter M90x1 Diamond Steeltrack (Baader part nu...

G.N.Wilcock

Oct 26, 2019