Manufacturer: -TS Zubehör
Product number: TSL501

EUR 94,90RRP EUR 109,00you save 12.9% (EUR 14,10)


incl. 19 % VAT (DE)  
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Product expected to be available from 01.09.2025

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rating: 5.0 of 5
  • Details..
  • Technical data..
  • In the box..
  • Manufacturer infos..
  • Safety informations..
TS Mini Guide Scope for astrophotography
The guide scope is not heavier than a normal finder and fits into all standard finder shoes like they are used by Skywatcher, Vixen, GSO, TS-Optics, etc. With a suitable autoguider, you can guide telescopes up to 200 mm (8") aperture and a focal length of 1500 mm. The Guide Scope is the optimal solution for all amateuer astronomers who do not want to work with an off-axis guider or are not able to because of space issues, but their mount also have not the reserves for a large guiding scope.

Even less sensitive autoguiders can be used, as you can easily adjust the TSL501. Thus can always position a sufficiently bright guide star exactly in the center. Due to the large field of view, a suitable star will always be available in the field.

With an eyepiece, the TSL501 becomes a wide-field telescope, with a crosshair eyepiece, it becomes a finder. The former is especially convenient for owners of long focal length instruments, as they can often only now get a complete view of extended star clusters, nebulae or the Andromeda Galaxy.

Note: The focus position of the guiding scope allows the connection of cameras with a larger flange focal distance, but this usually means that you need the TSVF1 extension tube for eyepieces in order to be able to focus.

Mounting the guide scope
The guiding scope can be connected to the telescope in several ways, a basis for versatile use.
Connection to telescopes with standard finder shoe: The Mini-Guidescope has a base for this finder base and connects directly like a finder.
Connection to telescopes with 1/4" photo thread: Attach the supplied adapter plate to the thread, if necessary with a spacer for better alignment. Then attach the supplied finder base to the plate using the two small screws. Now the telescope has a standard finder base into which the foot of the guide tube mount fits.
Connection to dovetail bar: The adapter plate can be attached to a dovetail bar, using one of the supplied hexagon socket photo screws. You can then again attach the finder base, into which the base of the guide scope bracket will then fit. Now you can attach the dovetail bar to the telescope.
Connection to accessory clamp: The adapter plate can be attached to an accessory clamp using one of the supplied hexagon socket tripod screws. You can then again attach the finder base, into which the base of the guide scope bracket will then fit. Now you can attach the accessory clamp to a second dovetail bar, such as is provided on some telescopes.
Connection to telescope tubes: On larger diameter telescope tubes, with a little tinkering, you can attach the finder base, which then allows direct connection through the base of the guide scope mount.

The adaption of the autoguider to the 1.25" receptacle
The TSL501 offers a generously placed focus position behind the 1.25" receptacle, so you can focus all popular autoguiders, like M-Gen or the autoguiders from ZWO, like the ASI120 Mini, without problems.
Adaption of autoguiders with T2 connector: An adapter from T2 to 1.25" is already supplied with most autoguiders. This is what you need for connecting. If you should not have an adapter, we recommend the (1.25" focal adapter). Just put the camera into the 1.25" opening and focus by shifting. The parfocal ring fixes the position with maximum sharpness. Thus you have to focus only once.
Adaption of autoguiders with C-mount connection: For attaching these guiders, you need the adapter TS1-C. Apart from that, the procedure is the same as if adapting via T2 (see above).
Adaption of autoguiders with M28/1.25" filter thread: Modern autoguiders like the ASI120Mini have a 1.25" housing with filter thread. In this case you need the adapter TSVF1. Apart from that, the procedure is the same as if adapting via T2 (see above).

Focusing the autoguider:
You need to focus only once, afterwards it is sufficient to put the autoguider into the guide scope and start. For calibrating autoguider and guide scope to each other, proceed as follows:
Thread the 1.25" barrel to the autoguider.
Push the 1.25" parfocal ring loosely over the barrel.
The put the autoguider into the guide scope and focus by shifting.
If required, you can adjust the sharpness even more accurate by rotating the objective and then locking it via the knurled ring.
If you have achieved optimal sharpness, shift the parfocal ring towards the receptacle until it stops, then lock it with the set screws and the hex key.

Ready - now you have calibrated your autoguider to the guide scope. In future you only have to put the guider into the guide scope and then you can start right away.
Objective:2-element, achromatic objective, airspaced
Aperture:50 mm
Focal length:180 mm
Coating:Fully coated
Focal point:20 mm behind the 1.25" receptacle
Weight:450 grams
50 mm Mini Guidescope
Adjustable bracket
Additional dovetail base for self-installation
Two mounting screws for dovetail base
Adapter plate for 1/4" photo threads
Two photo screws of different lengths for adapter plate
1.25" Parfocal ring with hex key
Cardboard box

Manufacturer / Importeur:Teleskop-Service Ransburg GmbH
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
Safety informations: PDF Download


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Reviews

Written by Marco Iozzi
on 2025-04-02

"Very good product, no issues found"

Written by Hartmut Scholz
on 2023-07-05

"Umständliche focusierung"

Written by Thomas Ebel
on 2022-05-17

"Gutes kl Guiding Leitrohr. Den Fokus zu finden ist ein bisschen zeitraubend"

Written by David Betzel
on 2022-01-30

"Günstiges Gesamtpaket und stabil ausgeführt. Die Optik ist gut und mit 50mm Öffnung und der sehr kurzen Brennweite genau ausreichende für meinen 72er APO. Für ***EUR ist wirklich alles dabei, auch ein Adapter zur Befestigung an Fotostativen statt im Sucherschuh. Leider hat bei meinem verwendeten Fadenkreuzokular von APM (24mm) keine Scharfstellung geklappt, ich habe mir dafür eine Verlängerung am 1,25-Zoll-Gewinde gekauft. Durch die weiteren 25mm an Länge kann ich jetzt perfekt fokussieren, denn das Fadenkreuzokular hat selbst noch eine eigene kleine Fokussierung. Alles in allem eine super Alternative zu den größeren Komplettpaketen mit teilweise fest integrierten Okulare... Ich wollte da flexibler sein und habe nur genau das richtige Sucherfernrohr mit späterer Option zum Guiding."

Written by Seraphin Feller
on 2021-11-17

"Der Federdruck in der Justage ist relativ klein, so dass sich die Justage leicht verschieben kann, was in der Nachführung zu fehlern führen kann. Es wäre gut den Federdruck zu erhöhen und einen besser passenden ORing einzusetzen. Der verwendete Oring ist zu klein."

Written by Timo Prenzler
on 2021-09-10

"Artikel schnell geliefert und entspricht den Erwartungen"

Written by Björn Voss
on 2020-07-24

"Super, alles ok, passt "

Written by Helmut Bergler
on 2020-07-07

"Wirkt hochwertig und stabil gefertigt. "

Written by Björn Voss
on 2020-07-07

Super und gute Qualität

Written by Peter Wacker
on 2020-05-28

"Geliefert wie beschrieben"

Written by Claudio Solis
on 2018-07-06

*****

Written by Milen Gogov
on 2017-08-25

Excellent

Written by Klaus Kamm
on 2016-09-27

"Passt gut auf Halterungen. Leichtgängige Fokussierung mit Konterring. "

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