William Optics Apokromatski Refraktor AP 81/478 Gran Turismo 81 WIFD OTA

WILLIAM OPTICS APOKROMATSKI REFRAKTOR AP 81/478 Gran Turismo 81 WIFD OTA

William Optics Apokromatski Refraktor AP 81/478 Gran Turismo 81 WIFD OTA,  ima trielementno lečo z ED steklom (FPL-53) v sredini. To posebno steklo zagotavlja sliko, ki je praktično brez barvnih napak. Ti teleskopi torej spadajo v razred apokromatskih refraktorjev. Refraktor s takšno lečo zagotavlja ostro sliko z visokim kontrastom. To ima zelo pozitiven učinek na opazovanje planetov in kompenzira nizko ločljivost velikega zrcalnega teleskopa.

Več informacij na uradni strani proizvajalca, ki se nahaja tukaj.

Tehnične specifikacije za William Optics Apokromatski Refraktor AP 81/478 Gran Turismo 81 WIFD OTA:

Optics

• Type: Refractor
• Type of build: Apochromat
• Aperture (mm): 81
• Focal length (mm): 478
• Aperture ratio (f/): 5,9
• Resolving capacity: 1,70
• Limit value (mag): 11,3
• Light gathering capacity: 130
• Max. useful magnification: 162
• Tube weight (kg): 3,9
• Tube length (mm): 460
• Carrying length (mm): 390
• Coating: STM MULTI-COATING
• Stray light baffles in the OTA: yes
• Lens design: Triplet

Focuser

• Type of build: Helical
• Connecting threaded (telescope side): M92 / M63
• Connection ( to eyepiece): 2 (RotoLock)
• Gear reduction: 1:10 Fine movement
• Ring clamp: yes
• Free aperture (mm): 64
• Motorized: no

Mount

• Type of build: OTA
• Mounting type: no mount

Included accessories

• Finder scope: no
• Dew Shield: yes
• Deviating optics: no
• Prism rail: Vixen-Style
• Miscellaneous: Bahtinov focus mask
• Carrying handle: yes
• Carry case: yes

General

• Series: Gran Turusmo
• Colour: red

Area of application

• Astrophotography: yes (very good)
• Moon & Planets: yes
• Nature Observation: no
• Nebulae & galaxies: yes
• Sun: no (Only with appropriate Sun filter)