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

    Aug 29 2021 01:14 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.

  • BASIC EXTRAGALACTIC ASTRONOMY Part 9: Supermassive Black Hole and Host Galaxy Coevolution

    Sep 06 2021 12:20 PM by rekokich

    The only primary evidence available to an astronomer about a very remote object consists of photometric measurements, a spectrogram, and an image which is in many cases no more than a pinpoint of light. In this article we present basic cosmological concepts and simplified mathematical methods which allow an amateur to derive from this meager data a surprising number of physical properties of distant extragalactic objects with a precision of several percent within professional results.

  • SkyTee-2 Alt/Az Mount Review

    Jul 27 2021 10:42 AM 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.


Cloudy Nights Announcements

ATTN - Change in Vendor Rules . . .

18 Mar 2021
Effective 4/1/21 Vendors will no longer be able to post classified ads.   - The original intent of the Classifieds was to allow members to sell to other members. And that, combined with the rapid growth of the site, the use of the Classifieds... Full topic ›

Change in Feedback Forum location

20 Jan 2021
The admin team has decided to move the Feedback forum to the Announcements Section as Feedback ties in more with the theme of Announcements and News, since Feedback Forum includes a lot of explanations as to how CN works.    The new menu... Full topic ›

User Reviews

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

    Aug 29 2021 01:14 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.

  • SkyTee-2 Alt/Az Mount Review

    Jul 27 2021 10:42 AM 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.

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

    Jun 29 2021 09:35 AM 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.

  • A review of the Unistellar EVscope

    May 31 2021 02:48 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.

  • Astrotrac 360 tracking platform – first impression

    Jan 31 2021 01:33 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.

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

    Jan 24 2021 02:12 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".

  • Omegon 32mm 70º SWA eyepiece review

    Jan 24 2021 01:29 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.

  • Review of iPolar hardware and software for polar alignment

    Dec 05 2020 02:41 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.

  • Review of the Hubble Optics 14 inch, f/4.6 Premium Ultra Light Dobsonian Telescope

    Sep 29 2020 01:35 PM by Chris Westland

    I looked at HO telescopes for some time before purchasing mine. On paper, the design is elegant, and takes advantage of the 6063-T6 aluminum alloy used in all of the telescope’s components. The sandwich mirror is innovative. The upper cage looks more rigid than a flat ring, but without being too heavy. In general the HO telescopes are unique and affordable. I am a previous owner of an Obsession Classic 20", and Dave Kriege’s scope set a standard for what I was expecting from a Dobsonian telescope.

  • My experience with the Starizona Landing Pad

    Aug 29 2020 01:31 PM by emgeesea

    I wanted to provide a review of my experience with a Starizona Landing Pad I recently purchased for my CPC 1100.

  • A quick Review of the MIGHTY MAX 12V 100AH BATTERY

    Aug 29 2020 12:20 PM by skunkwirks

    I would highly recommend this battery for your portable equipment, I am convinced.

  • Nexus II Review

    Aug 29 2020 11:54 AM by xrayvizhen

    SUMMARY: The Nexus II is an outstanding piece of equipment that allows anyone to use their Smartphone or tablet and see where their telescope is precisely pointed. It is an extremely cost effective and easy way for someone to add digital setting circles and a “Push-To” function to just about any telescope.




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