SVBONY SV106 50mm Guide Scope Finderscope with a built-in helical focuser FMC

Description

Specifications: Type of Telescope: Achromatic Refractor Lens: Cemented Tube material: Aluminum Alloy Aperture: 50mm / 1.97in Focal Length: 190mm / 7.48in Focal Ratio：F3.8 Coating: Fully multi-coated Best for imaging: Deep sky User level: Intermediate Rough Focusing Range: 30mm Focuser: Helical Focuser with 8 mm Travel Connection to eyepiece: 1.25inch Tube diameter: 54.5mm Dewcap diameter: 61mm Total Length: 240mm Included accessories: Tube Rings and Dovetail Rail Net Weight: Approx. 604g / 21.31oz Package Includes 50mm Primary Mirror Guiding Bracket w/ 89mm Dovetail Plate 1.25inch Helical Focuser 6PCS Metal ThumbscrewsDataCaciques
For those nights when you don't plan to capture astrophoto exposures, this versatile Guide Scope can double as a straight-through finder scope with an optional 1.25" eyepiece installed. For example, inserting a 20 mm eyepiece creates a 9.5x50 finder scope, or you can insert one Illuminated Centering Eyepieces for use as a finder with illuminated crosshairs for easy aiming. (Eyepieces sold separately).
Versatile 50mm aperture Guide Scope with a built-in helical focuser for precise focusing of
potential guide stars;will help guide you to capturing higher quality astrophotos;an ideal
addition to any astrophotographers collection of gear.
Fully Multi-coated Glass means multiple coatings on all lens surfaces and all air-to-glass surfaces are anti-reflective multi-layer coated. And double-sided FMC lens has greater advantages than the single-sided in increasing the light transmission, delivering bright, clears and crisps images even in low-light conditions.
The elimination design improves the observation efficiency since less light is lost due to reflection and improves the contrast of the image by elimination of stray light.
The focuser (Stroke 30mm) helps you quickly lock to the stars you want to see. The focuser simply moves the attached device inwards or outwards while maintaining its orientation which means your field of potential guide stars will not rotate as focus is adjusted, further increasing ease of use.
After focusing, you can see details of the image clearer and brighter. The focusing accuracy is up to 0.1 mm. The 10 mm focusing stroke will meet your needs for viewing guides.
The Multi-Use Guide Scope features male T-threads on the focuser collar for secure threaded attachment of guide cameras equipped with female T-threads.And the versatile Guide Scope can double as a straight-through finder scope with an optional 1.25" eyepiece installed. For example, insert a 20 mm eyepiece to create a 9.5x50 finder scope, or insert one Illuminated Centering Eyepieces for use as a finder with illuminated crosshairs for easy aiming. (Eyepieces sold separately).
A compression ring fitting keeps any inserted autoguider cameras or  astronomy accessories free of pesky scratches. CNC machined aluminum alloy body with laser engraving letters has a long performance life.
30mm Back Focuse
The focuser (Stroke 30mm) helps you quickly lock the stars you want to see. The focuser simply moves the attached device inwards or outwards while maintaining its orientation, which means your field of potential guide stars will not rotate as focus is adjusted, further increasing ease of use.
10mm Helical Focuser
After focusing, you can see details of the image clearer and brighter. The focusing accuracy is up to 0.1 mm. The 8 mm focusing stroke will meet your needs for viewing guides.
Metal Hoop with Dovetail
&
1.25
inch
The Multi-Use Guide Scope features a machined, knurled
metal hoop
to make fine focus adjustments nice and easy, while a thumbscrew lets you lock-down the focuser in-place once
to
complete adjustments.
And the plastic on the endpoint keeps
the scope itself free of pesky scratches
.
Fully Multi-coated
Fully Multi-coated Glass means multiple coatings on all lens surfaces and all air-to-glass surfaces are anti-reflective multi-layer coated. And FMC lens has greater advantages in increasing the light transmission, delivering bright, clears and crisps images even in low-light conditions.
Stray Light Elimination
The elimination design improves the observation efficiency since less light is lost due to reflection and improves the contrast of the image by elimination of stray light.
Meticulous Design
A compression ring fitting keeps any inserted autoguider cameras or
astronomy accessories
free of pesky scratches.
CNC machined aluminum alloy body
with laser engraving letters
has a long performance life.
.
How to Use a Guider Scope as Telescope
Test 1: SV106 Guider Scope & 68 degree 20mm eyepiece
As the SV106 guider scope focal length is 190mm, so it works with the 20mm eyepiece, the magnification power is 8.5x.
I could see the building clearly with adjust the back focus distance 30mm. the words on the building is very clear.
Test 2: SV106 Guider Scope and SV105 Camera
I tested the SV105 camera with the SV106 Guider Scope, use sharpcap 3.2 on windows 10 computer.
Just put the 1.25 inch camera into the SV106 scope double helical focuser hole directly, and adjust the backfocus distance, until get a clear image on the computer.
I focus the SV106 scope to the outside building, and take this picture with the Mi 5, actually the picture is much clear on the computer screen, when I take this picture on my smartphone, then it is not that clear as see it directly. (I am sorry about my photography skill.)
Test 3: SV106 Guider Scope & 2x Barlow & Diagonal & Eyepiece
As I post in the facebook group, I could see image clearly through the eyepiece directly, but the image is not that clear as TEST 1 results.
Because when the light reflected by the Diagonal, and go through the 2x barlow, it has been loss some.
As you want to use the 90 degree diagonal with this SV106 finder scope, yes, it would work.
But if you want to see the much more clear image, I don't recommend you to use the Barlow and diagonal. Thanks very much!
How to mount the SV106 to your OTA?
you can mount the SV106 and the dovetail slot (
F9144C, F9144D
) to the dovetail plate (
F9143C or F9143D
).
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