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Your favourite eyepieces and filters are welcome to complete the list of accessories
| Booking instruments prices | per night | per week (7 nights) |
|---|---|---|
| Dobson T300 Orion SkyQuest XT12i IntelliScope | 25 € | 150 € |
| Equatorial mount Skywatcher AZ-EQ6GT | 20 € | 120 € |
ORION SKYQUEST XT12i IntelliScope TELESCOPE
Here are its features i prefer :
● Dobson mount with good weight-size ratio (no need of step stool)
● aperture around 12 inches for better profitability against turbulence
● easy object locating technology (starry fieds here can be confusing and it’s a help for southern constellations)
● no motorization (no noise, no electronic trouble, manual pointing is normally quicker after initialization procedure)
Optical specifications :
– Newton (Dobson mount)
– Primary Pyrex mirror : 305mm
– Reflectivity ratio : 94% with SiO2 enhanced coating
– Secondary mirror (minor axis) : 70mm
– Finder scope : 9×50 right-angle correct-image, prealigned (Field = 5°)
– Focal length : 1500mm
– Focal ratio : f/4.9
– Obstruction (without spider effect) : 0.23
– Resolution power : 0.39”
– Limit stellar magnitude : 15.1
– Minimum & maximum amplifications : 43x & 610x
– Eyepieces : Sirius Pl 20mm (31.7), Sirius Pl 10mm (31.7), ultrawide Sky-Watcher 6mm (31.7)
– Barlow lens : 2x ED Sky-Watcher (2”)
– Magnifications : 60x, 120x, 150x, 250x, 300x and 500x
This instrument is diffraction limited (λ/4 – λ /5 controlled at the star test) and collimated.
Mechanical specifications :
– Rolled steel optical tube
– 9 points mirror cell
– Focuser : Crayford 50.8/31.7mm
– Eyepiece rack : 3 holes
– Pointing electronic assistance (encoders system + hand controller)
– Locating precision : into constructor tolerances
– Database objects : 14000 (NGC/IC mainly + 99 exotic objects, in construction)
– Manual guiding
Others specifications :
– Tube length : 58” (147cm)
– Total weight : 83lb (37.7 kg)
– Instruction manual in english + technical sheet (alignment procedure)
The 12” is always fully mounted and movable everywhere on the field.
SKY-WATCHER AZ-EQ6 GT Mount (2017)
This german equatorial mount has good press in imagers circles. Here are its features they prefer :
● ease of use
● reliable without troubles on the field
● honest tracking performance even in long time exposure (autoguide outlet included)
● possible setting to Alt-azimuth Mode (easiest in tracking & GOTO, visual mode)
● allowed to disable/enable automatic mode for manual mode witout loosing mount’s alignment status (Auxiliary encoders)
● possible installation a secondary instrument in alt-azimuth mode
● good charge capacity – size ratio
● movable everywhere on the observation field (fair weight)
● verified and controlled by french specialist Pierro Astro
Mechanical specifications :
– Equatorial and Alt-azimuth Dual Mode
– Notched driving belt transmission system + 2 blocks + worm drive
– Motorization double axis + GOTO pointing
– Micro-step motor resolution : 0.14”
– Permanent PEC
– Brass gear (RA/DEC) 180 teeth , 92.5mm diameter
– Periodic error : ± 6″ (quality report on the spot)
– Steel axis 40mm diameter
– Dual-fit saddle : VIXEN/LOSMANDY (id. for secondary saddle)
– New polar scope, illuminated with engraved lens (equinox years)
– Latitude adjustment range : 10° to 75° (equatorial) and 90° (azimuth)
– Azimuth adjustment range : ± 9°
Electronic specifications (GO-TO system) :
– Alignment method : on 1, 2 or 3 stars (2 in Altaz)
– 2 auxiliary encoders (coordinates are kept permanently)
– Control handbox SYNCAN updated (v4.39) with 42900 celestial objects (M, NGC, IC, Sun, Moon and planets)
– Tracking rate : sidereal, lunar and solar
– Advanced Functions : Park, PAE Synchronization (Pointing Accuracy Enhancement), Backlash, Identification, Tour…
– Pointing accuracy : 5’ RMS or 1’ with PEC
– Maximum sleewing speed : 3.4°/s
– Auto-guiding speeds : 0.125x 0.25x 0.5x 0.75x et 1x
– GPS Celestron Nexstar protocol compatible
– PC connection (RS-232C) via EQMOD
Others specifications :
– Inox tubular tripod (33.5 inches < height < 58 inches)
– Charge capacity : 42lb, 35lb in astrophotography ( SCT type C11, Maksutov until 180mm or 10” Newton)
– Total weight : mount head (34 lb), tripod (16.5lb) and counterweights (2×11.2lb)
– Power requirement : 12V DC vehicle power cable or DC 11-16V 4A
– Instruction manual in english + technical sheet (simplified polar alignment setting, in french)
Mechanical plays are adjusted and electronic board controlled. The polar scope is calibrated.