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Skysafari lists Delta2 Lyrae as a double, with magnitudes 4.28 & 11.20, But search stelledoppie.it
and this is a summary of the result; a multiple with 11 components potentially visible in an amateur scope.
This is my plot of the above data.
With a 200p F/5 in Bortle 8 skies/ average seeing, I have seen the 6 brightest components to mag 10.30. The mag 11.20 should be doable but has eluded me so far.
I think that for my setup, the dimmest 4 stars will need darker skies or better eyes 😀
If you are observing Delta2 Lyrae, how many components can you identify?
My first attempt at M57. I attempted to capture the extended halo by gathering some OIII and Ha data and then blending these into Blue and Red channels, respectively of an LRGB image. The image below represents about 21 hours and was taken with my Esprit 150.
LIGHTS: L:13, R:13,G:8. B: 10 x 600s; Ha:13, OIII:14 x 1800s. DARKS:30, BIAS:100, FLATS:40 all at -20C.
The Ring Nebula 13/05/2018 01:39
(2300 light years)
GSO 0.20 m
Sky-Watcher NEQ-5 Pro SynScan mount
QHY5L-IIC + IR cut filter / ASI 120MC + IR cut filter
f: 1000 mm
Total exp: 25 min
Combination of images obtained with the QHY5L-II and the new ASI 120MC (received from FLO) ?
Matteo Vacca Milis, Italy http://vaccamatteo.weebly.com/ https://www.astrobin.com/users/matteovacca/
By Victor Boesen
Tonight was the best night out in a long time. The last couple of days the sky has been crystal clear, and today is friday, which meant nothing was on the schedule for tomorrow.
Scope, filters and eyepieces:
Today, I was using my one and only Skywatcher 10" dob, with my collection of explorer scientific 82 degree eyepieces. For the first time in a long time, I also used my CLS filter.
Before I headed out, I decided to have a look at skysafari 5 to see what I should have a look at this clear evening.
Tonights list ended up including:
M13 looked fabulous as always, but I can't quite bag the propeller. I was resolving stars nicely, even a couple in the center, when using averted vision. I think M13 looks the best at 136x and sometimes at 255x, however most of the times I think the image is too dark when observing at 255x.
M92 was a surprise. Locating it was surprisingly easy, as I through the finderscope could just see it as a little faint dot. Looking at it through the scope was amazing. It was not as big as M13, but at 136x it looked very nice, and sometimes, it almost looked like the stars formed a smiley:-) Surprisingly I was also able to resolve a good amount of stars in this cluster, but not as many as in M13.
Now I know this wasn't on the list but I thought I had to give it a go when I saw it on skysafari. NGC6229! Also located in Hercules, and via starhopping also easy to find. This was the smallest one of them all, but the most rewarding since this was my first object from the New General Catalogue (NGC). I was also using 136x at this target, because this is the most comfortable magnification in my opinion. I was only resolving one or two stars in this target, but it was easily visable, just as a bright smudge.
M57 is by far my favorite object (out of the few objects I have seen). The contrast and shape of it gives me the WOW feeling everytime I observe it. Now this target I was observing comfortably at 255x and it looked amazing! Now this was where it popped in the CLS filter which almost made it look like the red outer-part of the nebula was visable, but this faded soon after. While observing this target for about 20min I was thinking if a UHC or a OIII would give me better or the same views?
M27 was kind of disappointing, but I just think I have overestimated how it would look like, but it was still a very nice view it gave me at 136x and 85x. The dumbbell shape became more visable over time, but I think the thing I like more about M57 compared to M27 is the contrast between sky and nebula.
In the end it was one of my best nights I have had with my new (5 months old) scope. I have yet to try it at my grandma and grandpas' where the milky way is visable, and I am very excited to do just that.
By Red Dwarfer
Hello SGL , this is my first new topic and it is in relation to M57 in Lyra ... I have tried to see this Nebula in different scopes since starting " telescope astronomy " a couple of months ago but to no avail so far ... Might it just be the time of year with no truly dark skies in Midsummer ? I have had much more luck with DSOs in the form of star clusters , like for example the M29 in Cygnus last night while trying to find the Nebula near by ( again to no avail ) ... The equipment used last night was a Meade Infinity refractor 90mm 600mm f/6.7 and a 40mm Plossl for wide field views .