Istar refractor

Author: ofzb

August undefined, 2024

Witryna18 paź 2010 · I purchased an Istar 6" F15 achro lens a few weeks ago to use in a folded refractor on a dob mount I plan to build this spring and summer. Chose the Istar … WitrynaTest of iStar Optical 150mm F15 achromatic refractor. by Bartolomeo Montrucchio, Italy Perseus AT 150-15 OTA. Report by member „Rutilus“ at www.cloudynights.com. Very …

New Istar optical APO refractor - Refractors - Cloudy Nights

WitrynaSoon, all iStar achromats will feature the R30 option, including apertures from 127-mm up to 250-mm. Better yet, the R30 option adds only about 25 percent to the cost of … Witryna4 maj 2011 · Page 1 of 10 - Astro Telescopes 102mm (4) f/11 Refractor - posted in Refractors : Since I still have a wait on my new Istar refractor I needed something to hold me over so I ordered the Astro Telescopes (Kunming United Optics) 4 F11. Ive read a view reviews so far and all have been positive. Some have said the focuser is very … chemist pfizer vaccinations

Istar 204mm f5.9 review - Refractors - Cloudy Nights

Witryna8 maj 2009 · There doesn't seem to be a great deal of difference but the Dob will usually win on shear light gathering ability. I just ran the numbers (in the Calculator) for my 127mm (5") iStar refractor and my 16" GSO dob and the limiting magntude difference (at 200x) was 14.6 for the refractor to 16.2 for the dob, not a great deal of difference, … WitrynaAs you may know the weight of the original classic construction Perseus AT 150-12 refractor, excluding mounting rings and dovetail, is 14.47 Kg (31 lbs.). While this is … Witryna2 gru 2024 · The Phantom FCL 140-6.5 is, therefore, a great all-round refractor, and the manufacturer has promised to remedy the minor mechanical issue with the amount of … flight dulles to dubai

$New Istar Optical APO 140 f6.5 - first light - Refractors - Cloudy Nights$

iStar WXT 204-6LT refractor review – Astronomy Now

WitrynaAchromatic refractors have been used extensively in the past. In particular long focus refractors are interesting for reduced chromatic aberration. In this brief report1 a test … WitrynaRecently iStar Optical became a registered supplier of optics for the prestigious STAR Labs of Lockheed Martin Aerospace and Defense Company. ... as well as by … chemist perth hay streetWitryna27 kwi 2005 · Page 1 of 4 - Istar Asteria TCR 204-8 R35 - posted in Refractors : I prepare small test this telescope and I am very excited from it. Construction the telescope is great - it has three long mounting rail for other equipments like finder, solar telescope, pointing telescope and etc. Is very immune against wind and cool down very fast.This … flight dulles to london

"Witryna3 paź 2007 · HI. I do not know that beside myself, anyone else has purchased the ISTAR-OPTICAL 8" F8.8 achromatic refractors scope from Ales. This is a big and massive scope, at 6Ft long, without the dew shield, and weighing 45 lbs for the OTA alone. It needs 3 person to carry and mount it onto my losmandy CG11. " - Istar refractor

Istar refractor

$iStar 127 mm (5”) R30 F/12 Doublet Refractor Review$

WitrynaTest of iStar Optical 150mm F15 achromatic refractor. by Bartolomeo Montrucchio, Italy Perseus AT 150-15 OTA. Report by member „Rutilus“ at www.cloudynights.com. Very short report on my iStar 150mm f/15. Last night I was observing a few double-stars and the scope was taking high magnification very well. The scope seems to have a real … Witryna9 sie 2009 · New Istar Optical APO 140 f6.5 - first light - posted in Refractors : Istar Optical made new lens Apochromat triplet 140 f6.5 (will be deliver together with Apex 5-elements reducer/flattener - effective ratio f4.2). I received from my friend first picture from this lens and notes: I was able to get an image of M31 with the 140 triplet last night.

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Witryna30 gru 2008 · Page 1 of 5 - Istar 8 F/6 - posted in Refractors : Im really excited! Just placed an order through High PointScientific for Isatr NEW{REDUCED WEIGHT}8" F/6 Comet Hunter. Mike at Istar said including rings the weight should be around 30lbs with the overall all length at 48".Should be here in about 4-5 weeks. Ill let you know then … WitrynaiStar’s newly designed and produced Phantom FCL 140-6.5 is the first-ever imaging Super APO refractor with fully detachable 80 mm rear section to allow for the use of …

WitrynaRefractor. A refractor is a telescope with a lens in the front that captures the incoming light and converges it to a focal point by refraction. There are roughly two types of refractor telescopes; achromatic and apochromatic refractors. Achromatic refractors have a dual lens element design.

Witryna11 maj 2011 · 8 inch Istar Scopes on Sale! - posted in Vendor and Group Announcements: On Sale! Phoenix WFT 204-6 Comet Hunter Achromatic Doublet - $2994 On Sale! ... Today I've just aquired a Losmandy G11 mainly for the purpose of handling my soon to be built (by me!)homemade Istar 8" 8.8 refractor. Just waiting … Witryna6 kwi 2024 · With the use of the browser it is possible to: browse data concerning goods nomenclature, duty rates and other measures, and also additional information (this third category includes: Legal Notes, Explanatory Notes, Binding Tariff Information and Lists of Goods, Classification Regulations, Explanatory Notes for CN, Classification Rulings of …

WitrynaI have been an amateur astronomer since 2002 and have owned just about every type of telescope commercially available. These include 8, 11, and 14-inch SCTs, 4” ED apochromatic refractor, and 15” Dobsonian.

Witryna10 sie 2010 · It seems to be one-of-a-kind except for maybe the Istar Optical Phoenix WFT 150mm F/5 refractor. And the Vixen is a little less expensive. Back to top #10 SeattleScott SeattleScott. Hubble. Posts: 14,854; Joined: 14 Oct 2011; Posted 18 June 2012 - 11:07 PM. The NA 140 is a very unique instrument. ... chemist penworthamWitryna18 maj 2016 · This yields 88% transmission. This corresponds to the light transmission of an unobstructed 7.51" refractor with perfect transmission. In reality, an air-spaced doublet has 4 surfaces with (ideally) 0.2% loss, or 0.8% total. Modern optical glasses have very low transmission losses, so these losses can be ignored. flight dummy ticketWitryna24 paź 2008 · What size ERF? - posted in Solar Observing and Imaging: This might be insane, but hopefully you all can shed some light on my idea. I have an 8 f6 istar refractor with a 3.5 feathertouch focuser and an Earthwin Binoviewer system that uses 1.7x and 2.5x barlows. To keep tube currents down Im thinking that a 90mm ERF … chemist phdWitryna20 sty 2012 · Celestron Omni 150R - posted in Refractors : Ok guys & gals.... Looking to hear some thoughts on the Celestron Omni 150R. I have been looking at this for awhile & I am about to pull the trigger. ... just as the 150 F/5 is. The Istar 8" F.6 claims 40 pounds for the OTA only, so maybe closer to 45 pounds fully loaded. Id imagine a 9" F/6 … chemist pharmacist biologistWitrynaiStar 127 mm (5”) R30 F/12 Doublet Refractor Review. My first telescope was a refractor. As a star struck 8-year-old it represented the ideal image of how a … chemist perth ukWitryna7 lis 2024 · a good DSO refractor? - posted in Refractors : I was wondering about a good refractor for DSOs? Visual only, low to medium power. I was thinking a quality achromat might work but, not willing to do f/15. I am thinking of 6 - 8 aperture. .. something to rival 8-10 newts in performance. Ive enjoyed viewing through refractors … flight dulles to tahitiWitryna17 wrz 2016 · Page 1 of 2 - Istar 150mm F/8 Refractor - posted in Refractors : I’m fairly new to this site and wanted to post some pictures and comments on my Istar 6” f/8 anastigmatic refractor. I purchased the lens in cell (150mm F/8 R35 Slim) from Istar last year with the intention of building a scope around it. I am fairly new to astronomy, … chemist philippines