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William Optics Guidescope GuideStar Apo 61 - Blue

Name: William Optics Guidescope GuideStar Apo 61 - Blue
Brand: William Optics
SKU: M-GS61-BU
Price: 599 EUR

The GS61 can be used as a guide scope for refractors with focal lengths ranging from 700 to 1200 millimeters, but its ED lens also makes it suitable for astrophotography.

61 mm aperture, 360 mm focal length, f/5.9

Lens with FPL53 element (fluoride glass) for excellent color fidelity

Well-suited as a guide scope for imaging optics with focal lengths ranging from 700 to 1200 mm

Camera connection via M54 thread or 2" receptacle

Image circle of 42 mm

Corrector/field flattener optional

Helical fine focus at the front, with lock ring

Handle with connection for finder or guide scope

Manufacturer: William Optics

Product number: M-GS61-BU

EUR 599,00

incl. 19 % VAT (DE)

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excl. 7.95 € shipping costs (DE)

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William Optics Guidescope GuideStar Apo 61 - Blue

The GS61 can be used as a guide scope for refractors with focal lengths ranging from 700 to 1200 millimeters, but its ED lens also makes it suitable for astrophotography.

61 mm aperture, 360 mm focal length, f/5.9

Lens with FPL53 element (fluoride glass) for excellent color fidelity

Well-suited as a guide scope for imaging optics with focal lengths ranging from 700 to 1200 mm

Camera connection via M54 thread or 2" receptacle

Image circle of 42 mm

Corrector/field flattener optional

Helical fine focus at the front, with lock ring

Handle with connection for finder or guide scope

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Technical data..
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William Optics Guidescope GuideStar Apo 61 - Blue

Is this still a guide scope or already an apochromatic refractor? The fact is that the GS61 guidescope contains an FPL53 glass lens whose outstanding optical properties enable sharp stars for tracking control (guiding). The GS61 can thus be used on refractors with focal lengths from 700 to 1200 millimetres.

With the optional P-FLAT61A flattener, the GS61 can even be used for astrophotography - ideal for use with small camera mounts.

Helical focusing is achieved by moving the dew shield with the integrated lens: loosen the knurled counter ring, move the cap until the focus is achieved and tighten the counter ring again. At the rear end, the GS61 has an extendable extension tube. With the GS61, finding the focus position is really no problem!

Constructed with precision from CNC machined aluminum, the GuideStar 61 offers a robust yet elegant design. It comes equipped with a Vixen/Synta-style finder dovetail clamp for easy attachment of finder scopes, and a soft carry case for protection on the go.

Objective design:	Doublet with FPL53 element, identical in design to that used in the Zenithstar 61
Objective diameter (mm):	61
Focal length (mm):	360
Focal ratio (f/):	5.9
Image circle (mm):	42
Coating:	Multi-coated
Focusing:	Helical by rotating the front section, with lock ring
Connections:	M54 external thread, 2" receptacle
Recommended flattener:	P-FLAT61A
Dovetail bar:	Vixen standard, Arca-Swiss
Dovetail clamp:	Vixen finder standard
Tube material:	Aluminum alloy
Colors:	White (base color), Black, Blue
Tube length (mm):	340
Weight (g):	1440

- Optical tube assembly
- Dovetail bar
- Carrying case

Manufacturer / Importeur:	Teleskop-Service Ransburg GmnH
Street:	Von-Myra-Str. 8
ZIP / City:	85599 Parsdorf
Country:	Germany
Telefon number:	+49 89 99228750
Email:	info@teleskop-service.de
Website:	www.teleskop-express.de