The Retina Nebula (IC4406)
The sky opened up for the first time in a month.
I've hardly been able to photograph galaxies this year, so I want to aim for one, but with the current settings, it's impossible to guide the 2000mm focal length. I want to go to the observatory, but I can't move because of the New Year's holidays and other factors, so I'm stuck. What's more, the cooled camera won't cool at all today for some reason. It's at 100% power at 25 degrees Celsius, and it won't cool below that. Another cooled camera with the same power supply system is fine, so it must be a problem with the camera, not the power supply.
I wonder if insects have made a nest and can't ventilate? I'd like to go to the observatory next week and do some maintenance.
So today, as with Omega Centauri last time, I aimed for a bright target low in the south where no stars were streaming for 30 seconds with No Guide.
The Retina planetary nebula in Lupus, just east of Omega Centauri. The name retina sounds scary, but this nebula photographed by NASA/ESO certainly looks like a retina, with many fine filaments running through it. Unfortunately, there is no trace of the retina in the photos I took.
However, there are amateurs who have photographed filaments, so it may be possible to capture the retina if we take the time.
I've hardly been able to photograph galaxies this year, so I want to aim for one, but with the current settings, it's impossible to guide the 2000mm focal length. I want to go to the observatory, but I can't move because of the New Year's holidays and other factors, so I'm stuck. What's more, the cooled camera won't cool at all today for some reason. It's at 100% power at 25 degrees Celsius, and it won't cool below that. Another cooled camera with the same power supply system is fine, so it must be a problem with the camera, not the power supply.
I wonder if insects have made a nest and can't ventilate? I'd like to go to the observatory next week and do some maintenance.
So today, as with Omega Centauri last time, I aimed for a bright target low in the south where no stars were streaming for 30 seconds with No Guide.
The Retina planetary nebula in Lupus, just east of Omega Centauri. The name retina sounds scary, but this nebula photographed by NASA/ESO certainly looks like a retina, with many fine filaments running through it. Unfortunately, there is no trace of the retina in the photos I took.
However, there are amateurs who have photographed filaments, so it may be possible to capture the retina if we take the time.
1ヶ月振りに空が開いた。
今年はほとんど銀河を撮影できていないので銀河を狙いたいが、焦点距離2000mmを誘導するには今のセッティングではまるで無理。観測場に行きたいが正月休み等があり大渋滞が予想されるので身動きが取れない。おまけに今日は冷却カメラがなぜかまるで冷えない。摂氏25度でパワ−100％となり、それ以下には冷えない。同じ電源系統の別の冷却カメラは問題ないので、電源系統では無くカメラの問題だろう。
虫が巣を作って換気ができないのかな？来週には観測所に出向いて、メインテナンスをしたい。
よって今日も前回のオメガ・ケンタウリに引き続きNo Guideで30秒は星が流れない南の低い位置ある明るいターゲットを狙って見た。
調度オメガケンタウリの東の狼座にあるRetina惑星状星雲。網膜と言う名はなんか怖いが、NASA/ESOが撮影したこの星雲は確かに細かいフィラメントがたくさん走っていて網膜に見える。そして残念ながら私の撮影した写真には網膜は影も形もない。
ただ、アマチュアの方でもフィラメントを撮影されてる方が居るので時間をかければ網膜を写す事ができるのかもしれない。
Place: Astropical@CSky Observatory (Bortle Class 3, Moon Phase 21.6%)
Shot Date:24th / Apr / 2025 22:52 (UTC+7)
TS TSRC10T Carbon Truss Prime Focus (250mm F/8 f/2000mm)
Filter: SVbony RGB set
R: 80X 30Secs Total 40minutes
G: 80X 30Secs Total 40minutes
Palette: Target RGB
B: 80X 30Secs Total 40minutes
Total 2 hours
Star RGB
Gain: 200 , Offset 5CCD: Player One Artemis-M Pro Bin2
Mount :iOptron CEM70G
De-Rotator : Wanderer Mini V2 (0 Deg)
Guide: None
Controler: NINA
Pre-Processing APP Drizzle None
Post-Processing PI,PS (Re-sampling 300%)
Shot By Taro Seki Astropical.uk
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