----------------------------------- KERAUNOS 24 Feb 2008 18:08 Coronado PST VS. Lunt Solar 60mm H-a ----------------------------------- 1.Am gasit de curand acest sistem H-alpha:Lunt Solar 60mm Hydrogen-alpha Telescope System,insa nu prea am gasit review-uri pt el.Astept cu nerabdare parerile voastre si o comparatie "teoretica" intre cele doua sisteme, avand in vedere preturile lor, specificatiile tehnice si upgrade-ul,cel putin pt coronado (acesta oferind posibilitatea de a monta un filtru solar max 40 mm) : Coronado PST 1) Optical: # Objective focal length 400 mm # Clear Aperture 40 mm # Wavelength of Operation 656.3 nm (H-alpha) # Nominal Spectral Bandwidth of Operation <1.0A # Blocking Efficiency 10ﾯ5 # Internal optical re-focusing mechanism provides compatibility with most conventional eyepiece lenses. # Built in Sun finder # fully multi-coated doublet # bottom thread 1/4-20 for standard fit to any photographic tripod 2) Mechanical: # Advantage: telescope body does not have moving or extending parts. # Objective threaded to take SolarMax40 and create <0.6A telescope. # Approximate Dimensions of Main Body 15" L x 2.1" W x 3" H Weight~3lbs # 20mm Kellner Eyepiece included with PST Scope $599.00 The LS60/Ha is a complete Solar Telescope. This refractor based system has a precision aligned air spaced doublet with a 60mm aperture. The focal length is 600mm providing a ~5.4mm image thru a 6mm blocking filter. Course focus adjustment via a slide tube. Fine adjustment is achieved with a Crayford style focuser with 10:1 reduction standard. Specifications: • Aperture: 60mm Precision Aligned Doublet • Focal Length: 600mm • Band Pass: <0.8 Angstroms RMS • Focuser: Precision Crayford style with 10:1 included • Color: Pearl White with Black Anodize System Includes: • LS60 Ha Telescope. • Clam Shell with mounting holes. • Re-enforced case with foam. $899.00 http://luntsolarsystems.com/ls60t_ha.html http://www.coronadofilters.com/products_pst.html 2.Ce dealer avem disponibil la noi pt a furniza PST sau Lunt? PS.fara comentarii de genul:de cat un shtift de PST mai bine iau un SolarMax 40 Telescope(daca PST are <1.0A bandwidth si SMT <.7A bandwidth,etc nu inseamna ca este un junk telescope/calitatea este data de "materialele" folosite in constructie,de constructia propriu-zisa).Sorry de PS,dar am gasit astfel de afirmatii