Sketching Contest

Recent Additions

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  iStar Optical’s Phantom FCL 140-6.5 review

  Dec 02 2021 12:03 PM by Psion

  From what I was able to see, I conclude that the optics belongs to a Super APO class, which is highly suitable for both visual observing and astrophotography. Unfortunately, I have to state that the TEC 140 lost in the direct side-by-side chromatic aberration comparison test, otherwise the TEC is practically perfect from the optical point of view. 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 “grip” of the rotary lock. Therefore, iStar Optical can be congratulated on a very well made optical instrument.

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  Replacing a Damaged Dobsonian Mount

  Dec 02 2021 10:45 AM by w1vi

  Considering the choices available for replacing my damaged Sky Watcher Dobsonian mount, I found the same size Apertura mount the easiest and most cost effective solution. In addition to the ease of modifying the Apertura mount, the superior construction and improved azimuth bearings noticeably improved overall satisfaction with this approach.

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  Fairhavens II

  Oct 31 2021 01:02 PM by Gork

  My last article was an overview of Fairhavens, my first dedicated observatory, along with its untimely demise. It is now five years later and I am ready to try again. Being a rental home I could not build a permanent structure (I couldn’t afford one anyway). So, I started looking for a temporary structure that would protect my gear from the elements and still leave room to move about.

Cloudy Nights Announcements

User Reviews

• 
  iStar Optical’s Phantom FCL 140-6.5 review

  Dec 02 2021 05:03 PM by Psion

  From what I was able to see, I conclude that the optics belongs to a Super APO class, which is highly suitable for both visual observing and astrophotography. Unfortunately, I have to state that the TEC 140 lost in the direct side-by-side chromatic aberration comparison test, otherwise the TEC is practically perfect from the optical point of view. 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 “grip” of the rotary lock. Therefore, iStar Optical can be congratulated on a very well made optical instrument.

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  Who’s Afraid of a Phantom: Istar Phantom 140mm F/6.5, that is?

  Oct 31 2021 05:43 PM by ABQJeff

  The Istar Phantom 140mm f/6.5 is a new entry in the large (5”+) triplet APO world. For the price to performance it is an excellent option. The vendor is already implementing upgrades (eg 80mm removable section from OTA tube) and recognizes need to make further improvements in its mechanics (eg 2” twist tight clamp). The optics are superb and are even better than the advertised 0.9 Strehl minimum guarantee. If you are interested in a super high performing 5+” triplet APO, that is much less than comparative peers, don’t be scared, I highly recommend you take a look at a Phantom!

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  SHARPSTAR 94EDPH APOCHROMATIC REFRACTOR

  Oct 01 2021 01:30 PM by Larry Carlino

  The Sharpstar 94EDPH turns out to be a competent instrument and a good value for its $1495 asking price. It's a very good deep-sky telescope, is airline portable, and is, in all probability, a good choice for imagers, the 0.8 focal reducer yielding a fast optical system. As to the consistency of the optics and quality control, a sample of one has little statistical validity. My particular scope might be better than average (or worse), and the QC checklist from Sharpstar failed to catch the balky focuser and sagging dew cap.

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  My Losmandy G11T review

  Sep 26 2021 04:32 PM by jeffmarston

  In general I really like my G11T. It is well built, should last for decades from what other owners of Losmandy mounts say. It seems to work really well with auto guiding. It is very stable even with my C14. It is very different from my Celestron mounts and to be fair It took a while for me to learn how to use those mounts also.

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  FIELD TEST: THE NOH CT-20 ALT-AZ MOUNT

  Oct 15 2021 05:14 PM by wapaolini

  After several weeks of field use of the NoH CT-20 mount for general astronomical observing with both my TSA-102 and APM-152 refractors, I found the operation and use of this mount to be highly intuitive in the field. The axis friction knobs are conveniently located and are tactile-distinctive from the saddle plate knobs that hold the telescope on the mount, so there was never any question in the dark as to which knob-type I was operating. Operation of the mount was also smooth and precise throughout the testing and general field observing sessions. At no time did I ever find that the CT-20 mount was anything but superlatively capable to handle even my large 6-inch f/8 refractor.

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  SkyTee-2 Alt/Az Mount Review

  Jul 27 2021 02:42 PM by ScrewLoose

  Overall, I think that this mount is good value for money and a good choice for my purposes. I'm confident that the mount will be more than adequate for my needs.

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  SharpStar Askar ACL200 200-mm f/4 astrographic telephoto lens

  Jun 29 2021 01:35 PM by covington

  I strongly recommend the ACL200 for wide-field astrophotography. It also has some uses for (fully manual) nature and landscape photography. The optical performance is exceptional, and the physical construction is unusually well suited for astronomical use.

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  A review of the Unistellar EVscope

  May 31 2021 06:48 PM by bmwscopeguy

  Well here is another product that has received a lot of hype and press, but without divulging much useful information about the telescope itself. Well needless to say, the hype worked on me….and I took delivery of my (used) Unistellar EVscope today.

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  Astrotrac 360 tracking platform – first impression

  Jan 31 2021 05:33 PM by Magnar W.

  After some waiting my Astrotrac 360 arrived, and the drive looks great straight out of the box. Beautifully machined, light weight, and compact. Just what I was asking for, after moving to a city, leaving my fully equipped small observatory behind me at the countryside.

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  FIELD TEST: CARL ZEISS APOCHROMATIC & SHARPEST (CZAS) BINOVIEWER

  Jan 24 2021 06:12 PM by wapaolini

  This astronomical binoviewer is offered by Denis Levatić of Croatia (denis0007dl@gmail.com) as an after-market modification of new Zeiss binoviewer bodies. Mr. Levatić's value-added modifications to these Zeiss binoviewer bodies are then offered under the moniker of "The Carl Zeiss Apochromatic & Sharpest Binoviewer".

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  Omegon 32mm 70º SWA eyepiece review

  Jan 24 2021 05:29 PM by Tiago Ferreira

  There is no review of this eyepiece on internet and i bought it and found interesting to make a video about it.

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  Review of iPolar hardware and software for polar alignment

  Dec 05 2020 06:41 PM by stephen.kennedy

  iOptron’s iPolar upgrade, which replaces the optical scope on the iOptron SkyGuider Pro, does not accurately provide polar alignment when compared to results measured using identical equipment operating Sharpcap Pro and the specified guide camera and scope. Data was collected while simultaneously running both the iPolar alignment software and SharcapPro on the same equipment. The deficiency is consistent with an issue in the iPolar system’s calculation of altitude parameters in polar alignment after plate solving.