Show me an aging Greek and I'll show you the Nick of time.
"The heavens declare the glory of God"...
6"f15 D&G, 6"f5 Jaegers.
TSA 102, TV60.
Docter 15x60, 10x50.
Quote:Good for you!It's always nice to find a real bargain. I looked it up on eBay and I could not find any more. Stan
Quote:Looks great! 420ft/1000yds equals 8 degrees which is wide angle for 7x50 but approx 56 degrees apparant field of view so not strictly speaking a wide angle binocular. Very few 7x50 binoculars have over 7.1 degree field of view (50 degrees apparant).
Quote:Quote:Looks great! 420ft/1000yds equals 8 degrees which is wide angle for 7x50 but approx 56 degrees apparant field of view so not strictly speaking a wide angle binocular. Very few 7x50 binoculars have over 7.1 degree field of view (50 degrees apparant). that's extremely wide angle for a 7x50, if you only knew how large the prism clear aperture and the eeyepiece field stops need to be to accomplish that. There's a vey ggood reason why 7x50s usually do not exceed 7.1°.Either these are an extremely well made expensive binoocular, or due to angular distortion they do not really provide tthe statted field of view or perhaps there is no field stop and the outer eddge of the field of view has no clearly defined stop orr the outer fieldd illumination is rather poor. One of those needs to be true for this to be claimed an 8° binocular. edz
My binocular collection Binoculars by date of addition Binoculars in Alphabetical order
Quote:I looked it up on eBay and I could not find any more. Stan
Quote:Thanks for the link to the reviews.
Quote:Tasco had a very wide angle 7X50 (Model 421?), which had eyepieces of at least 70 degrees apparent field of view. The prism and field stop apertures were 29mm. The f/3.5 objectives were further reduced to an effective f/3 via focal reducers, mounted either at the rear prism aperture or on barrel extensions as part of the eyepieces (depending, I suppose, on date of manufacture.)
I forget the claimed field, which might have been somewhere in the range of my calculated 11 degrees. Rather wider than this unit's ~8 degrees, which shows it to be eminently possible.
Quote:It was the Tasco model 420. It was listed at 578 Ft. @ 1000 Yds., or 11°. I owned a model 420 for awhile and the images were not very flat. By comparison, the model 410 which is a 7x35 listed at 657 Ft. @ 1000 Yds. offers much better images over a wider field.Jason also made an 11° 7x50 in their Statesman series.
C14 XLT, CGE NexSTAR 11 GPS + 120ST APM/TMB 130/780, AT111EDT SW EQ5P (2" Tripod/20" Pier) XW's 3.5mm - 20mm, 28mm RG, TVZ 2-4 ES14mm/20mm 100° UWAN 28mm,Paragon 40mm, TV55, Meade 2X 2" TeleXtender TMB SMC 4mm-16mm, Pentax 0-18, CZJ 0-25 EarthWin PFS-DBSE, WO DuraBright, AP MaxBright TV Bino's Bino Sets X 2: UO H.D's ~ 5mm-18mm, TV Pl.(NJ's)7.4mm - 40mm 16T5's, 24mm Pans Canon 18X50 IS Pentax 7X35 (9.3°
Scott my scopes: a few refractors (50-102mm), 2 Newts (4.5-12"), and an 8" SCT
Quote:Found a pair in Miami . Price seems a little steep?Mike
Quote:"Z" just means that it features the ZIP focus system. IMO that "feature" actually make the binocular worse off, but that's just my opinion.
Quote:Very cool, David! And thanks for mentioning *Tri*Star*. I totally forgot about it last year until the weekend had already passed!
Quote:I wouldn't say $100 for a pair of these 7X50s is steep at all, if in good condition. They are fairly well built, with 24.5mm clear aperture prisms mounted on a separate, tiltable shelf. The somewhat wider field than the common 'standard' found in most 7X50s is a plus to me.
Milton Wilcox R.I.P
The night sky is the canvas....
My optics are the brush....
The Milky Way is the masterpiece
reductio ad absurdum of epistomology is solipsism....
Quote:Even under quite dark skies, where the Gegenschein is visible, I find those big exit pupils to deliver an almost distractingly bright sky. It's fine when my unaided eye is showing me such a bright sky, but through an instrument I generally like the darker view provided by a 4-5mm pupil, getting down to 3mm from the suburbs.
Binoculars: Miyauchi Saturn III - 33/39/50/71/150x100, WO 22x70ED, Fujinon 16x70 FMT-SX Pentax 10x50 PCF-V, 10x43 DCF-SP, 6.5x21 Papilio
Nikon 10x35 EII, 7x35 E, 8x30 EII, 8x23CF AS Diplomat
B&L 7x26 Custom
Scopes: C9.25, TMB130SS/FT, SV80S-LOMO 80/480
Quote:Even under mag. 6.5 skies, there's a huge difference in sky background brightness between 10x70s and 16x70s, for instance. For me, the 4.4mm exit pupils give a far more satisfying view than 7mm.I'm actually quite happy with 3mm exit pupils... Rich
Quote:Even under mag. 6.5 skies, there's a huge difference in sky background brightness between 10x70s and 16x70s, for instance. For me, the 4.4mm exit pupils give a far more satisfying view than 7mm.
MarkLeica 8x20; Nikon Action 7x35; Vixen Apex Pro 8x42; Orion 15x63; Docter Nobilem 15x60WO Megrez II 80 FD / APM 107mm f/6.5 / Mewlon 210 on DM-6 + Berlebach Planet