Discovery Astrophotography with ZWO ASTRO

Astrophotographer’s Story: Chayaphon Phanitloet

Q1: At first, congratulation that your nice image won #ASIWEEK. Can you introduce yourself to us?

Hello, first I would like to thank ZWO for choosing my picture Venus to win ASIWEEK #04/2022. My name is Chayaphon Phanitloet, I live in Nakhon Ratchasima Province, Thailand. I am a primary school teacher.



Q2: Why do you love astronomy? What does it mean to you?

Back to the past. The total solar eclipse in Thailand on October 24, 1995, was an event that made me very excited and impressed because this may be the only chance in a lifetime that can be seen in Thailand. We need to wait another 75 years for another total solar eclipse. In 1996, Comet Hyakutake visited Earth and then the Comet Hale-Bopp came too in 1997. These past significant events made me more interested in astronomy.


Total Solar Eclipse Path 24 Oct 1995

Q3: When did you start astrophotography? What was your feeling when you first saw the image showing on the screen?

I didn’t have a camera to record the past astronomical events before. They only existed in my memory. So that’s why we should have a camera to be able to capture images of these astronomical events. I started astrophotography in 2014, the moon. Seeing the moon image taken by myself the first time was very excited.


First Astrophotography and first Moon in 2014 with Orion Starblast 90, Canon 700D

first telescope

First Telescope for Astrophotography

Q4: What gear do you use for astrophotography? Any pictures of them? (In this question, please include the photo of the gear you used for your winning picture.)

The Equipment used is currently my  1,000mm GSO 10” telescope with EQ mount iOptron CEM70 and ASI462MC. Filter Antlia L, IR685, IR850, CH4 and U-Venus with Televue Power mate 5x.


my gear

GSO 10” F/4 1000mm telescope, ASI462MC, iOptron CEM70, Televue Power Mate 5x

Q5: We see you have taken a lot of Venus’ pictures these months and your ASIWEEK image “Venus” was outstanding! How did you capture it?

It is difficult to photograph Venus. First of all, Venus is not very high above the horizon, so the weather is very important. Secondly, imaging Venus doesn’t need to use RGB filters like other planets do, because if taking a normal color, we will not be able to see the details of Venus. To see the structure of the clouds and see the beauty of Venus, RGB colors must be created by synthetic colors obtained by IR850 filter and the U-Venus. IR850 will make a red image, U-Venus will make a blue image. Then we can mix IR850 and U-Venus to get the green image.


Venus 2021 Series

Q6: What do you think is the most difficult part of planetary imaging? How do you deal with it?

In my opinion, the first is the weather which we can’t predict much. When doing planetary imaging, we need a lot of magnification, so any changes in the air will have a big impact. Secondly, to collimate the telescope as best as possible, as straight as possible, for best clarity, I will collimate the telescope before every photography. The temperature in Thailand is fickle, so the structure of the telescope often changes. As a result, I am always pursuing the best focal length. Thirdly, it is necessary to shoot as quickly as possible. Setting the right resolution can allow us to achieve a faster frame rate. And the last one is image processing, for the sake of sharpening the parts of the planet and keeping the planet’s colors correct, not deviating from reality.


Jupiter Moon (IO and Ganymede) Occultation events and IO Eclipse with GRS

Q7: What changes have astrophotography brought you over these two years?

I am able to capture images of astronomical events and share them with others. Finding what I want from the internet, which is the largest source of knowledge, makes me know how to find knowledge on my own to improve image quality.


Mars Near Earth 2020
1st prize winner Astrophotography Contest 2021

Q8: Apart from taking astrophotos, do you participate in other astronomy-related events?

I work as a teacher and I have brought this knowledge to teach the students in the schools. Let them learn knowledge and achieve interest in astronomy.


Watching The Partial Solar Eclipse March 9th, 2016


Watching The Partial Solar Eclipse Dec 26th, 2019

Q9: How do you balance your work and astrophotography?

I like photographing the planets because it doesn’t take a long time. In the evening after work, I have time to take pictures of these planets, especially Venus, which usually appears in the morning. And there will be plenty of time for astrophotography and image processing during the weekends.

My Hobby Planetary imaging

My Hobby – Planetary Imaging

Q10: Does your family join you when you take the astrophotos?

My family is involved in most of my activities, especially my children. My son constantly sits and watches me take pictures and ask questions. When doing astrophotography, I let my children learn a lot that I didn’t have the opportunity to learn. The other members of my family are always there to support and motivate me.


My Family with me in Astrophotography Contest 2021 Ceremony


My son and the telescope

Q11: When is your most exciting moment during a whole astrophotography project?

Seeing the result of image processing is the most exciting thing from my point of view. It’s like that I’m on a road full of obstacles and I am slowly processing through them to find the great result. I really love the process and the result.


Use Pixinsight for Planetary image processing


Q12: How do you like your camera ASI462MC?

I really like the ASI462MC, it’s a high speed camera. Especially when shooting in the high QE infrared spectrum, I would use the IR850 filter to photograph Venus. The frame rate was very impressive. And if I take Jupiter through the CH4 filter, it gives me more signal in a limited time.

3 planets combination

①Neptune Dec 4th 2021  ②Uranus Dec 11th 2021  ③Jupiter in CH4 Nov 19th

Q13: What achievements have you made on astrophotography during the whole year? What goal do you have for next year?

The success I’ve achieved this year is capturing planets better than last year. In Thailand, there is an annual astronomical photo contest organized by the National Astronomical Research Institute of Thailand (Public Organization), and this year I was the 1st prize winner. Next year, I would like to increase the quality of my planetary imaging even more. I will take more nice images with cheap equipment that everyone can afford.


Astrophotography Contest 2021 Ceremony 2021
1st Prize Winner

Q14: What kind of CMOS cameras do you want us to develop in the future?

Photographing Venus must be featured in UV and IR wavelength. If there were a camera with high QE value in IR and UV wavelength it will be great. If it is a mono camera, that would be better.


Q15: What’s your impression of ZWO? Is there anywhere you think we can do better? Please feel free to tell us.

I am very impressed with ZWO products, beautiful and nice packaged. ZWO has also developed the software to be compatible with its own products, and it is updated regularly. What I want ZWO to develop are the peripherals used in photography such as Focuser or Adapter to make ZWO’s ecosystem richer. I think it wouldn’t be a problem for ZWO to produce these by itself. These products should be in line with its current own products as well.

jupiter combination

①Jupiter with Io and Io shadow  ②Jupiter and Europa  ③Jupiter Double Solar Eclipse IO Ganymede and Great Red Spot


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