Night Sky in Focus aims to provide useful information on astrophotography-related topics, visual observations, and equipment modification for fellow astronomy and science enthusiasts. In this site you will find articles on upcoming astronomical events, planned astronomical observations, DIY projects, and guides on how to get started with astrophotography. Other astronomy-related topics I am interested in (such as satellite communications) are also posted in this website.


Astronomical Images

This site features photos within reach of a 4-inch, 900 mm f/9 refracting telescope. Planets, galaxies, nebula, star clusters, the Sun, and the moon are the usual targets as they are visible in most parts of the year. On rare instances, artificial satellites orbiting the Earth, occasional comet appearances, asteroids’ closest approach, and recently-discovered supernova are photographed. Eclipses and other astronomical phenomena are also documented whenever possible.

To view my collection of astronomical images, click here.

Other Related Topics

I have engaged in another astronomy-related hobby—satellite communications—particularly, with the International Space Station (ISS). Getting involved with amateur radio is also a good way to get started with radio astronomy (perhaps one day I will explore that field).

To know more about the role of amateur radio in astronomy, click here.

Plate Call Sign


To view author’s profile, click here.
Email: eteny@nightskyinfocus.com

© 2012-2019 Anthony Urbano (Manila, Philippines)


12 thoughts on “About

  1. Great blog, man! I just bought a refractor telescope and can’t wait to use it again tonight!! Let me know once your observatory is done.

  2. Really appreciate the straightforward approach to explaining some of the more technical aspects of astro-imaging, I was having difficulty with things like autoguiding, drift alignment and various how-to guides on modifying webcams before I found this blog. Thank you!

  3. I was looking at your guide cam project, you said you only have to control east and west, but I am not polar , I am alt. az. so how would you wire that and also I do not have parallel port on laptop so how would you do that ?

    • Hi Steve,
      Any mount in alt-az configuration (that is, a mount that moves the telescope in an up-down-left-right manner) is not well-suited for imaging even if you get it to track with very high precision, since the image being taken will always appear to rotate (as framed with your camera). Large observatories with alt-azimuth mounts have special equipment called a derotator to compensate for this. Whenever possible, telescopes are mounted in an equatorial configuration since it only needs one motor to accurately track (as compared to 2 motors needed in an alt-az mount). All things being equal, an equatorially mounted telescope will always be superior (in terms of tracking accuracy) to an altitude-azimuth telescope.

      My suggestion would be to use what is called a wedge, to operate your alt-azimuth mount in an equatorial configuration. Regarding parallel port, you can simply use what is called a Guide Port USB interface (or GPUSB). It is a device that allows a computer to talk to your mount. I am already using one since I have upgraded to a newer laptop with no parallel port.

  4. Eteny,

    We love your site here in the US. Keep up the great work !

    I would like to suggest that you change your text font’s from purple to white, on your black backgrounds. We can’t read them!!

    Thank you .


  5. Enjoy the info on your site.I have a diy x y guide star finder if your interested in the plans.
    Let me know.it is in a pdf.

      • My x y star finder while not the best, it does work for me. I had been away from astronomy for a couple of years. Just got back into it . Browsing the net I saw your site. Since you like diy projects i thought this one might be of interest. In a basic form as i made it is fairly easy with off the shelf materials. Have a look and do with it as you wish. Best regards Greg

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