Jump to content

sgl_imaging_challenge_2021_annual.thumb.jpg.3fc34f695a81b16210333189a3162ac7.jpg

Recommended Posts

9 hours ago, Marki said:

Thanks John.

You're not kidding. Just been reading up some of the very long, convoluted, tortuous and even heated threads about the evolution of the 130 f/9 (ish) design, cool-down times and actual focal lengths over on CN..... . Informative, but exhausting in equal measure ;). After all that, at this point all I want is a clear night to try mine out... ;).

Heated threads on CN? Surely not! 🤣

I hope you get clear skies soon to test this beauty out 👍🏻

  • Like 1
  • Haha 1
Link to post
Share on other sites
  • Replies 35
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Popular Posts

I have succumbed finally. Too much reading of too many posts about exotic glass has finally sent me over the edge. So here is the object of my desire, the telescope I have been dreaming of since I fir

A few observations on my LZOS. I find the dew shield cover a bit of a pain; its one of those screw-in  types (how do you call them?) and is surprisingly noisey at 2am when packing up.... :). The scope

So, the clouds have parted and the scope has been out an hour. I'll post a proper first light report later, but for now all I'll say is, I get it. I now get it. I really finally get it. I get why a pr

Posted Images

So, the clouds have parted and the scope has been out an hour. I'll post a proper first light report later, but for now all I'll say is, I get it. I now get it. I really finally get it. I get why a premium 'frac justifies its title. I also have a better appreciation of just how good a telescope a third the price can actually be as well.

A quick star test on Arcturus shows no false colour, absolutely none, inside or outside of focus (or actually at focus more importantly ;)) @240x. Near perfect and identical diffractions rings either side too and so far as I can tell given the conditions, no sign of coma or astgmatism etc.

So far so good....  :)

 

  • Like 5
Link to post
Share on other sites
4 minutes ago, Space Hopper said:

Excellent.

Take a look at M37 in Auriga.

Its a magical view through a big refractor......

Look for the prominent red star in the middle, one of my highlights...

  • Like 1
Link to post
Share on other sites

A few observations on my LZOS. I find the dew shield cover a bit of a pain; its one of those screw-in  types (how do you call them?) and is surprisingly noisey at 2am when packing up.... :). The scope is really quite heavy; I've just weighed it at 11.5 kg with rings, plate and handle and dewshield cap. Thats fully 2kg more than my SW Evostar 150 ED.

The tube is finished in that slightly textured powdered paint. The dewshield cap is metal.

I nearly dropped the scope whilst trying to get it on my mount. I'd forgotten to open up the saddle grip enough for the losmandy plate (only ever had skywatcher/vixen dovetail plates before). I started to rapidly unscrew the grip even more whilst trying to support the scope, and went too far and the grip piece fell out of the saddle entirely! I'd have been in serious trouble but for the handle!

Once safely attached and balanced, the AZEQ 6GT handled the scope with no problem at all, with little vibration. I wouldn't like to use anything in a lighter class though. Although heavier, the scope seemed happier on the mount than the 150 - maybe because the overall configuration is shorter and the mass more centrally balanced? I felt there was less vibration in the whole setup anyway.

Despite some episodes of cloud-dodging I was able to get a couple of hours in last night. The seeing and transparency were variable - seemed to be a fair bit of moisture in the air, but things generally got better after c. 1am. My initial impressions were effectively confirmed with regard to the optical qualities of the lens - simply better than anything else I have looked through (I admit my experience is somewhat limited though). I can only put that down to the way light is just put in the right place, so that the contrast is maximised.

I tried it out on a number of targets. A few gighlights from my notes: M3 and (especially) M13 were wonderful  - subtly scintillating with myriads pinpricks of light as the edges of the clusters just began to resolve. M57 a clear ghostly smoke ring. M81 and 82 clear and obvious. I tried many of my usual doubles in and around Bootis, with very pleasing results. Izar was a walk in the park. I even had some luck with Zeta herc, a target that has repeatedly frustrated me in the past. Although not clear, I could distinctly see the secondary, waving in and out of vision on the edge of the first diffraction ring as moments of clear seeing came and went. 240x  - went to 360x but wasn't really any better (I think seeing wasn't really up to that high mag). I don't know whether this is simply because I'd got my eye in better or the seeing had improved or this is really a tribute to the opitcal quality of this scope, but I've never got that close with any of my other scopes before.  Can't wait to try this out on the moon and the planets!

A couple of final thoughts. M13 in particular does look better in my 150ED. Not withstanding the better quality of the LZOS's lens, up against a decent quality ED in tonights seeing, the extra 20mm of aperture edged it on this sort of target. Actually, the SW150ED holds up pretty well, especially when you consider its effectively more than three-times less expensive.

Nevertheless, I am very happy with last night's first night for the LZOS and consider myself very fortunate to be able to have both this and the SW150ED in my current stable.

 

 

 

DSC_0823.JPG

DSC_0826.JPG

  • Like 5
Link to post
Share on other sites

Very interesting report Mark.

Aperture does tend to "win" with globular clusters.

When the seeing is steady you should get a nice split of Zeta Herculis with the 130 LZOS I think. The ED150 should do this as well of course.

It does take a bit of practice to get used to mounting these scopes using the Losmandy fitting, I agree.

Hope you get lots of great observing with your refractors over the coming months :thumbright:

 

 

 

  • Like 1
Link to post
Share on other sites

Sounds like you’ve got a winner there @Marki, looking forward to further reports. Zeta Herc is a tricky one. I’ve since done it in smaller scopes, but it took a Tak Mewlon 210 to first show it to me. With good seeing conditions it should be very doable in your 130 (and 150 as John says). As you say, there is a certain quality to the views through these top end refractors which is what makes them so attractive; the contrast and star shapes being the most obvious merits.

Out of interest, have you tried the AZEQ6 in Az mode? It’s certainly much more convenient for visual than EQ, because the eyepiece stays in the same orientation regardless of target, it just moves up and down as it were. Well worth a try.

  • Like 1
Link to post
Share on other sites

Thanks John. I use the AZEQ in mainly EQ mode at the moment - this is mainly as it gets the tube a little higher fromthe ground. I did have short prier extension but it wasn't really "tight" with shifted as the scope slewed - not ideal. I've been looking into different models of pier extension/mounting recently but I don't have the option of a permanent set-up regretfully. For now bend :) or kneel. And my back doesn't tahnk me for it... .;)

  • Like 2
Link to post
Share on other sites
1 hour ago, Marki said:

...I don't have the option of a permanent set-up regretfully....

Me neither.

All my setups have to be reasonably portable and quick to setup / tear down.

With hindsight the Istar 150mm F/12 on the EQ6 / Meade Giant Field tripod was not my smartest decision :rolleyes2:

  • Like 1
Link to post
Share on other sites
2 hours ago, John said:

Me neither.

All my setups have to be reasonably portable and quick to setup / tear down.

With hindsight the Istar 150mm F/12 on the EQ6 / Meade Giant Field tripod was not my smartest decision :rolleyes2:

My neither, I went for an SXP2 because it’s lighter then the competition. I can be in and packed up in 10 minutes at the end of the night. That means the scope, mount and tripod are disassembled and stored.

  • Like 1
Link to post
Share on other sites
40 minutes ago, Deadlake said:

My neither, I went for an SXP2 because it’s lighter then the competition. I can be in and packed up in 10 minutes at the end of the night. That means the scope, mount and tripod are disassembled and stored.

My solution for the 130 f/9.2 is alt-azimuth with no power / alignment requirements.

 

 

  • Like 1
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.