It offers a 90mm back focus distance and supports 1.25""/2"" interfaces, allowing flexible connection to cameras, field flatteners, and other accessories.

Ideal for Astrophotography & Nature

Perfect for capturing detailed views of the moon, nebulae, galaxies, and terrestrial subjects.

size: SV503 80ED+dovetail slot

SV503 80ED+dovetail slot

SV503 102ED+dovetail slot

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Realistic works captured with this device

NGC 7000

SV503 @Quentin Brandes

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Product Name	SV503 70F6 ED Astronomy Telescope	SV503 80F7 ED Astronomy Telescope	SV503 102F7 ED Astronomy Telescope
Type	Refractor	Refractor	Refractor
ED Glass	S-FPL51	S-FPL51	S-FPL51
Coating	SMC	SMC	SMC
Aperture	70mm / 2.75-Inch	80mm /3-Inch	102mm / 4.01-Inch
Focal length	420mm	560mm	714mm
Focal Ratio	f/6	f/7	f/7
Type of Focuser	RAP (Rack and Pinion)	RAP (Rack and Pinion)	RAP (Rack and Pinion)
Gear Reduction	1:10 Fine movement	1:10 Fine movement	1:10 Fine movement
Resolving capacity	1.97"	1.5"	1.17"
Limit value	11.3	11.6	12.1
Light gathering capacity	100x	130.6x	212x
Max. Useful magnification	140x	160x	204x
Tube weight	2.22kg	3.95kg	5.5kg
Tube outer diameter	88mm		121mm
Tube material	Aluminum	Aluminum	Aluminum
Back Focus Length	90mm	90mm	101.9mm
OTA Length	318mm	465mm	630mm
Dovetail & Ring	Yes	Yes	Yes
Dovetail Length	150mm	137mm	200mm

Model	W2370A
Length	along the 34mm
Width of internal slot	4.2mm
Horizontal length of internal slot	36.5mm
Vertical length of internal slot	36.5mm
Can be fixed	M3-M4 screw
Color	Black
Weight	41g
LWH	454025mm