70 mm f/5 Quadruplet Flatfield Apo with 3-Element FPL53 Objective

70 mm f/5 Quadruplet Flatfield Apo with 3-Element FPL53 Objective

70 mm f/5 Quadruplet Flatfield Apo with 3-Element FPL53 Objective

The SD apo is an ideal travel telescope for all photographers. The telescope is very well corrected by the built-in corrector on the axis and in the field.

Διαθέσιμο με Προπαραγγελία

Διαθέσιμο με Προπαραγγελία

Στην περίπτωση αυτή περιλαμβάνονται προϊόντα που συνήθως δεν κρατάμε σε στοκ και για κάποιους λόγους -που δεν εξαρτώνται από την εταιρία μας- δεν μπορούν να είναι διαθέσιμα σε διάστημα μικρότερο των 14 ημερών.Στην κατηγορία αυτή περιλαμβάνονται και προϊόντα που προδιαφημίζονται από τους κατασκευαστές αλλά δεν άρχισε ακόμη η επίσημη διανομή τους στην ελληνική αγορά. Πιθανόν για τα είδη αυτά να παρέχεται δυνατότητα προπαραγγελίας με ειδική προνομιακή τιμή. Αν γνωρίζουμε ήδη την πιθανή ημερομηνία άφιξης του συγκεκριμένου προϊόντος, στις αποθήκες μας, τότε αυτή θα αναγράφεται ξεχωριστά και επάνω από την ένδειξη «ΚΑΤΟΠΙΝ ΠΑΡΑΓΓΕΛΙΑΣ»

Διαθεσιμότητα: Σε απόθεμα

TS-Optics 70 mm f/5 Quadruplet Flatfield Apo with 3-Element FPL53 Objective

 The TS-Optics 70 mm f/5 Flatfield Apo Refractor

The TS 70 mm quadruplet is an ideal traveling telescope for astrophotography. The apochromat offers a fully illuminated and corrected field of 45 mm diameter, so it is also suitable for cameras with full frame sensors. The FPL53 triplet objective corrects the chromatic aberration. The image is free of chromatic aberration on axis and in the field.

Camera connection to the apo

On the camera side, the apo offers an M48x0.75 external thread. From this thread you have between 40 mm and 70 mm distance to the focal plane, depending on the position of the draw tube. So you have enough space for all common astrocameras, SLR and system cameras. If you unscrew the M48 adapter, you will get a M54x0.75 female thread. You also gain 6.5 mm optical path. A 2" filter thread is integrated in this adapter.

We offer suitable T-rings for the M48 thread to connect DSLRs. If you want to use a camera with T2 connection, we also offer the transition adapter to T2.

Connection of 2" nebula filters or L-RGB filters

With the filter drawer TSFSLM48 you can integrate 2" nebula filters and L-RGB filters. The drawer requires only 18 mm optical path. So you will have no focus problems with astrocameras. For cameras with longer working distance (DSLR with adapter for example) we offer short camera mount adapters.

Visual observation through the TS 70 mm quadruplet

The quadruplet is a photo apo. The back focus is not sufficient for 2" or 1.25" star diagonals. The TSZPT2 T2 star diagonal prism allows observation with 1.25" eyepieces. For connection you need:

TSM5475-T2 ... adapter from M54x0.75 to T2 male thread
TSZPT2 ... T2 star diagonal prism
T2i-125 ... 1.25" eyepiece connector

The use of full frame sensors (DSLR and CCD) becomes possible. The adjacent image of the M78 region and the Horsehead Nebula was taken by the 71 mm apo and proves its astrophotographic suitability. 350 mm focal length and the large, very well corrected field are the basis for impressive large field images with higher resolution than typical telephoto lens shots offer.

The newly designed 3" R&P focuser holds even very heavy CCD cameras without tilting. The drawer offers 360° rotation and direct M48 and M54x0.75 connection. This is also sufficient for cameras with larger formats.

The 4-element optical system works more effectively than a conventional combination of refractor and corrector. The optical elements are ideally matched to each other.

Technical Data

Optics: 4-element design in two groups
Lens: Triplet FPL53 lens with air gap
Correction: Fluoride glass corrector installed in the tube
Photographic field: 45 mm diameter fully corrected and illuminated
Focuser: 3" rack and pinion with dovetail ring and M48 connection - additional thread on the focuser M54x0.75 internal thread
Focuser travel: 30 mm
Length: 325 mm with retracted dew shield
Outside diameter of the dew shield: 103 mm
Working distance: Maximum possible working distance from the M48 external thread 70 mm - from the M54x0.75 internal thread 76 mm

Περισσότερες Πληροφορίες
Καθ.Βάρος (γρ.) 3000
Οπτικός Σχεδιασμός Διοπτρικό Αποχρωματικό
Διάμετρος (mm) 70
Εστιακή Απόσταση - F (mm) 350
Εστιακός Λόγος (f/) 5

In the box

  • Imaging Star 70 mm Apo
  • CNC tube rings
  • Vixen style dovetail bar with photo tripod connection
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