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Bit of a backround: I've been a keen stargazer when in my teenage years, then couldn't pursuit my passion, but recently, in my forties, it hit me again, as I moved and life is good (South facing large garden, obstructed only from the North by our house, but then I just move the scope further and viola!). Started with 90mm refractor, but was always thinking of reflector.
Long story short, I've got my SkyWatcher Star Discovery 150P GOTO a week ago. Bought it second hand, very good condition, and good mirror. Have got two nights stargazing, cought cold and I AM LOVING IT.
Now I would like to get me a nice wide angle ep for DSO spotting.
The scope is 150mm / 750mm f5. I've done some reading obviously, and Explore Scientific 82 degree series have all good reviews and fit within my budget. I can afford only one, and apparently the best for DSOs is the one that gives 2mm exit pupil. Now, for my scope that would be 10mm piece, and that is not within ES 82 degree range, so it's down to 11mm (2.2mm exit pupil) or 8.8mm (1.76mm exit pupil).
My question is: which one would be better for my rediscovered passion? I'm gonna be using that ep for faint mostly.
Thanks to everyone in advance for any kind advise.
The Wizard Nebula
An emission nebula 7,200 light years away and my first proper project of the new imaging year.
Really happy with it as I’ve had a steep learning curve with new kit so really pleased to see this image come together. It’s also the first time I’ve imaged it.
72x180s subs collected over 2 nights 24/25th August in my Bortle 7 back garden, Whitley Bay, England
Calibrated with darks, flats and dark flats in DSS and processed in SiriL and Photoshop.
Lacerta 72mm f/6 APO
ZWO ASI1600MC Pro at -15C gain 200
ZWO 60mm guide scope
ZWO ASI120MM-S guide camera
Altair Astro 2” Tri Band OSC Filter
Data collected in APT and guided with PHD2
The August galaxy of the month (the 100th one actually) from the Webb Society is NGC 7042 in Pegasus.
So I thought, better get that new 20 inch dob out and try it. The sky was a bit milky and there was a lot of high cloud around but that was not going to stop me!
Well I found NGC 7042 fairly easily. You can tell its a spiral as it has that characteristic low surface brightness glow across its entire face. It sits next to a triangle of stars. I then worked hard to see if I could see NGC 7043. I could not see it last time I tried when I had a 14 inch scope. Well this time I got it just! Very faint even with averted vision but definitely there. I managed to see stars to mag 14.9 despite the poor skies.
Here is my observation:
I also had a look at a few more galaxies on my target list, IC 1473 in Pegasus (within a triangle of stars) and IC1550 in Andromeda. That brings my total galaxies observed up to 1800.
Here is IC1550 from Aladin. Perhaps not galaxy of the month but it was special to me as no 1800 and it looks lovely next to that field star. I read that it is about 275 million light years away behind the Perseus-Pisces supercluster wall of galaxies.
Another great night of observing with the new 20 inch scope.
Do give any of the above targets a go as they are well placed to the east at the moment (which is best for me over the Cotswolds!) and let me know how you get on.
Thank you to Owen for the inspiration.
Hi guys, I'm new here.
So i have heard from this source:
that the galaxy andromeda will be visible to the naked eye and look bigger than the moon. They said that it will happen in August, but didn't specify a day.
Does anyone know anything about this? Or about how i kann see it?
Thanks in advance and sorry if my grammar is bad
The Needle in RGB
A beautiful edge on spiral galaxy in the constellation Coma Berenices, around 38,5 million LY from earth.
Investigations with the Spitzer IR telescope suggests that the galaxy may actually be a barred spiral galaxy with an inner ring as well.
Finally got around to processing my data on NGC 4565 from March.
This was one of my "test projects" from this year, where I only shot R-G-B and created a synthetic luminance master from those frames.
I think that the most efficient way is still to shoot pure luminance and then just enough R-G-B to get the color you want. Unless one is imaging star clusters, then I think it is totally fine to skip luminance altogether and get as much color data as possible.
I will try to do a "super luminance" where I add the R-G-B frames to the luminance stack at some point as well.
Shot with my Hypercam 183m V2 and totalling aroung 4,2 hours of data.
More info here: https://www.astrobin.com/412663/B/
Comments and critique is always welcome.
I decided to put this post in "Getting started with imaging" as it may be interresting for beginners thinking if luminance is worth it.