Istar refractor

Author: iojq

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 … 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. ...

General Reviews - iStar Optical

Witryna27 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 … fnf test itch io whitty

New Istar optical APO refractor - Refractors - Cloudy Nights

Witryna20 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 … Witryna7 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 … Witryna30 lis 2008 · Posted 25 September 2012 - 07:10 PM. The "received view" is that refractors are better than reflectors for observing doubles. That said; an 8" refractor is huge and an 8" reflector can be small. An 8" reflector, well collimated and with a descent mirror, will split doubles that a 4" refractor will not. greenville sc condos for sale downtown

$a good DSO refractor? - Refractors - Cloudy Nights$

New Istar Optical APO 140 f6.5 - first light - 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 … WitrynaiStar 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 … greenville sc convention center parkingWitryna17 sie 2009 · Page 1 of 2 - istar 6 inch f12 - posted in Refractors : Ive been using the istar a few times lately and have been happy with how its gone. Ive had it a few years … fnf test gameplay vs playground

"Witryna30 mar 2024 · drd715, on 05 May 2024 - 04:12 AM, said: Istar is currently near the production of a 140mm triplet F-6.5 lens cell (5 test samples were completed so far) and a 160mm CaFl doublet is up next. Both are near first run production. The cells will be offered first (soon) with complete OTA's near end of the year or early next year. " - Istar refractor

Istar refractor

$Istar 8" F/6 - Refractors - Cloudy Nights$

Witryna24 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 … 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 …

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WitrynaiStar 127 mm (5”) R30 F/12 Doublet Refractor. My first telescope was a refractor. As a star struck 8-year-old it represented the ideal image of how a telescope should look. It was a model 9TE-5 Tasco 60 mm (2.4-inch) f/11.7 700 mm focal length alt-az telescope sold by Sears, Roebuck and Company. It was advertised disproportionally as a 234X ... 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 …

Witryna18 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. Witryna11 lis 2024 · Published: November 11, 2024 at 2:26 pm. Taking delivery of a telescope like the Istar Perseus AT150-12, you really start to grasp the significance of the numbers 150mm and f/12. This is a very big refractor, and an impressive sight to say the least. The Istar is designed and manufactured mainly in the Czech Republic.

Witryna2 sie 2024 · Posted 08 August 2024 - 05:32 PM. Heya, I don't think D&G are still dropping scopes on your door step often enough. You could look into an iStar Optical objective lens of your choice. And then have Siebert Optics make the OTA (they do custom modular refractor OTAs and you supply the lens). That said, I would really … Witryna15 maj 2013 · Refractors Reviews. REVIEWS. iStar Optical’s Phantom FCL 140-6.5. tested and written by Josef Ladra, Sep-24, 2024. I have no financial or other interest …

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.

Witryna29 mar 2015 · While a fast (f/5 or faster) Newtonian of 200mm (eight-inch) aperture or more is a good rich-field telescope, an achromatic refractor of similar specifications can do considerably better, owing … greenville sc county auditor property searchWitryna11 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 … greenville sc commercial property for saleWitryna27 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 … fnf test mod free playWitrynaiStar’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 … fnf testing hypnoWitrynaTest 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 … greenville sc county assessorWitrynaI 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. greenville sc country clubWitryna26 lis 2006 · Page 1 of 2 - Istar 204mm f5.9 review - posted in Refractors : Finally got this little beast under some proper dark skies last week. This review is by no means an authoritative critique; rather a gentlemans observation of some very affordable and very nice glass. First off heres the business end, followed by a home-built OTA cut down … fnf test mickey mouse avi 2