If going after very faint things like tidal tails or the IFN I'll use 30 minutes in lum and usually I do Ha and OIII in 30 minutes as well. For me 5 minutes would be too short to get the faint stuff safely above the noise floor so I work in 10 minutes for colour and 15 for lum, usually. Hi! From a dark site you don't have to worry about skyglow so you can expose pretty much for as long as you like. Do you consider this to be an issue with your dark skies? After getting some horrible RGB skies in some of my subs I have been looking at extending my normal 1-1.5 hours from 5 minute subs per channel to 10 minutes subs, and then of course you want enough of them, so two hours seems about right. Just wondering what your thoughts were -) In discussing this with Peter he said that you were using 10 minutes to get above the noise factor. I see you are using two hours with 10 minute RGB subs. Optics: TS-Optics PHOTOLINE 130 mm f/7 apoĬorrection: TS-Optics PHOTOLINE 3" 0.79x reducer and correctorĮxposure: 15x 180 s = 2700 s, plus Dark and FlatĬorrection: TS-Optics PHOTOLINE 3" 0.Really nice image and lovely natural colours. New images by our customer Pierre Gatzki as exampleĮxposure: 10x 180 s = 1800 s, plus Dark and Flat very good engineering" Astrophotographic results obtained with this telescope on AstrobinHere you can find some astrophotographs made with this telescope model: Link to Astrobin 14:42:24, Gerald Walters "excellent product. 00:11:52, GEORGES ROY "Pas encore utilisé à cause des conditions météo Donc je ne peux pas juger pour l'instant" Technical InformationTeleskop-Service has collected a lot of helpful information about refractors and provided it in English as a PDF file: Refractors ♦ The PHOTOLINE reducer is suitable for cameras with full format sensors or smaller.Īstrophotographic results obtained with this telescope on AstrobinHere you can find some astrophotographs made with this telescope model: Link to Astrobin ♦ Recommended distance from the M48 connection thread of the corrector to the sensor: 55 mm ♦ The focal length is reduced to 719 mm, the focal ratio improves to f/5.53 ♦ The corrector fits directly onto the M68 connection thread of the focuser TS 0.79x PHOTOLINE focal reducer and corrector - TSRED379 From this thread it is 55 mm to the optimal position of the camera sensor - ideal for DSLR cameras. ♦ Included in delivery is a reduction to M48 - 2" filter thread. ♦ The recommended working distance is 103 mm. ![]() ♦ The corrector fits directly onto the M92x1 internal thread of the focuser. TSFLAT3 - large format corrector without changing the focal length ![]() Recommended astrophotographic correctors for the PHOTOLINE Apo: ♦ Binoviewers with 2" star diagonal mirror can be used without glass path compensation, only the 100 mm spacer needs to be removed. ♦ The working distance is optimized for all common correctors and also for visual observation. ♦ Connection thread for photo adaptations: M100x1 female thread, M92x1 female thread, M68x1 ZEISS style female thread and of course 2" and 1.25" receptacles ♦ Self-centering 2" and 1.25" adapters for correct clamping on the optical axis ♦ 360° rotation for optimal selection of the field of view ♦ Adjustment range of the drawtube: 100 mm ![]() ♦ Adjustment via gear rack - no friction - no yielding as with the Crayford focuser The large dimensioned focuser also allows the use of full format and large format cameras without vignetting, of course with the appropriate correctors. The 3.7" RPA focuser - ball bearing mounted:Ī highlight of the telescope is certainly the modern "rack and pinion" focuser with cograil adjustment and ball bearings. ♦ 100 mm long spacer between focuser and tube screwed with M123x1 thread on both sides ♦ Convenient carrying handle and GP/EQ5 style dovetail on one side and a Losmandy style dovetail bar on the other one ♦ Sturdy aluminium tube with internal baffles against stray light ♦ 3.7" Photoline RPA rack and pinion duial-speed focuser - hods accessories up to 8 kg with 360° rotation ♦ Temperature compensated, fully-adjustable cell ♦ Air-spaced triplet lens - apo element from FPL53 by Ohara This means that CCD cameras with large sensors can also be used and with all common correctors even for full-frame format.Īdvantages and features of the PHOTOLINE 130 mm F7 Deluxe Apo: The powerful lens is very popular especially with astrophotographers, so we now offer this apo with the large 3.7" RPA focuser. The objective lens without chromatic aberrations is mounted in a temperature-compensated cell that also compensates for minus temperatures. For the apo element the proven FPL53 from Ohara (Japan) is used. The 130 mm f/7 apo triplet refractor is equipped with one of the best objectives in its class. Photoline 130 mm f/7 Deluxe Apochromat - a refractor without compromise
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