Scope: 20” f3.6 Lukehurst Dob with Paracorr (fl = 2089mm & f4.1).
Night Vision: PVS-14 with Photonis 4g INTENS.
Eyepiece: Plossl 55mm (f2 x38).
In spring 2019 I created a Sky Safari observing list of 214 highest brightness galaxies in the night sky above.
- I have observed 134 of the 214 (the others have not been well placed over my garden when I have been outside).
In my first pass through these 134 galaxies, they were graded 0-3 (where 3 means "clear spiral arms" and 0 means "nothing to see here!")
I have now completed a second pass through the grade 2 and grade 3 galaxies. This has resulted in some movement between bands based on my now greater experience and having a better idea of what I expect to see.
My latest graded lists contain 38 grade 3 galaxies and 30 grade 2 galaxies (when combined this gives a list of the best galaxies to view when using military night vision technology combined with a low power eyepiece (using the TeleVue PVS-14 adapter).
[Note that lower power eyepieces give the best spiral arm results as they “increase the effective focal ratio” of the telescope/night vision system which really helps increase the detail seen at the eyepiece.]
As we are still in galaxy season 2020, now seemed a good time to re-publish my findings so others have the opportunity to observe some of these fantastic galaxies before they become “unavailable” for another 10 months…
Grade 3 galaxies (the best of the best).
Grade 2 galaxies (good but the arms are not quite there…)
Hopefully someone will find this useful information, next time they plan a galaxy observing session?
Note that my dobsonian uses an Astrodevices Nexus unit which I control using Sky Safari.
Here are my exported observing lists (which you can import into your Sky Safari app should you wish to do so?)
Grade 3 Galaxies.skylist.txt 10.34KB 39 downloads
Grade 2 Galaxies.skylist.txt 7.54KB 17 downloads
[Note that I had to append “.txt” to the filename to be able to upload them to cloudynights]
1. Remove the “.txt” from the end of the filename,
2. email them to your phone/ipad,
3. read the email on your mobile device and after clicking on the attachment, you should be offered the chance to “send to Sky Safari” by your email app…
4.Sky Safari will open and give a message “Observing List Created”.
Edited by alanjgreen, 27 March 2020 - 10:56 AM.