Deadlake

The other option is Y balance, SuperMount make a compact AltZ which will balance in the Y axis. See: http://supermount.kr/?act=shop.goods_list&GC=GD00 The smaller mount will take the FSQ and allows Y balancing which is a game changer as the scope will be effectiviely balanced in any position.

The 31 Nag is almost 1 kg while there 30 mm UFF is 556 grams. Good thing my scopes have plenty of glass at the front to balance them. 😀 The last Nagler 31 mm listed on SGL was at £495.

Is the Nagler 31mm (85 deg) the goto EP's for this, I have a 30 mm UFF (70 deg) at present? I'd use in either a 105 mm F6.25 or 130 mm F6 scope. Is that extra 12 degrees worth it?

Using a 55 mm Plossl, AP compressor gets this 105 mm to 5.5 degrees field of view

The Y balance adapter is now available. Just need the spacer if ussing with the motor kit.

I’m not convinced that Starlink is the best value for delivering the internet globally. The cult of Elon has much to answer for…

The more digging on this any screen you can see from more then 30 cm is too bright ( effect on night vision ), I’ll be using the nexus and a voice to text program.

I can imagine why the AP route is so popular is the amount of light pollution that at the same time is making visual observing hard to do. The impact on star hoping, in some places only push/goto can navigate the sky. Visual to me is the real time observation of the sky, EAA is out of this due the integration time taken to generate an image however sometime soon this will achieved. Now a lot of the objects I look at under SQM 21 skies with a C11 are mono chrome in nature whether using glass or boosting the contrast to SQM 23 with an intensifier. I can also look at methane clouds on the planets with the intensifier. Galaxy spiral arms becomes more defined. iI’s not just H-Alpha that is made possible. It’s easier then getting a 30” scope out that may not acclimate or while waiting getting clouded over. Visuals decline is IMHO because of light pollution….

All this talk of 12” dobs, I find my C11 (with a glass EP, but better with an intensifier) works well and using an AltZ mount makes the scope very mobile plus push to is easy to add. It’s around two trips to assemble in the garden and a lot easier to store then a dob. Very mobile in a car, when I need to find more altitude for more stable air. Only downside is the use of a dew shield however that’s a minor issue and if you are used to a APO the stars colour and sharp ness is not the same.

Has anyone tried to take notes on an iPad using a stylus with the iPad screen in red mode only? I get the feeling that even using a tablet or phone in red mode will still impact vision at nigh time, of course the impact will be related to the skies the observation is under.

They are other options, this 3.5 kg tripod (Supermount) and 4 kg mount (HAZ31) makes a 130 mm grab n’go Perfect for taxi trips…

When was the last time you bought a scope? Maybe all those scopes that would of been yours can be pooled into one last one..

Does it fit in the back of a taxi?

Gitzo tripod or something else?

How is you review going of the LZOS 130 mm / f9 going? As you mention mounts which one where you using? I've finally got the AZ100 with motor kit working with a joypad. I mention here as would be great for outreach (tenuous link?) as the scope is controlled from a joy pad Aka control this: With this Screen looks a bit like this: Note the star 1+2 align buttons can be hidden.

The extra light grasp of the 130 mm over the 105 mm is quite noticeable. I’d really like to know if a 0.99 vs 0.98 Strehl rating can be seen when comparing f 9.2 vs f 6? The f 6 is big enough and the f 9.2 will have a smaller exit pupil.

https://www.telescopengineering.com/telescope/apo160fl-f-11/ There is a 200 mm model as well.. https://www.telescopengineering.com/telescope/apo200fl-f-11/

What’s wrong with a Yellow Submarine from TEC, same price range as the LZOS and Yuri’s order book is open..

AP have different sized real cell adapters to 2.7” for Meade and Celestron for example.

The rear cell is different between the Meade and Celestron for starters… The only time I would say Meade is they have a faster F8 version, but apart from that not much to choose from apart from popularity..

The C11 has been around years, well supported and all the accessories you could imagine. I went with a C11 as well.

Actually do any Takahashi EP’s have undercuts?

The curse of the undercuts stopping any thread on SGL or CN....

It does indeed correct for aberrations, however if you want to increase magnification then using a Telecentric lens allows this while maintaining the exit pupil. There are also other BV which have no prisms in them such as Dennis's here: https://www.cloudynights.com/gallery/image/63529-apo-ss-binoviewer-premium-quality-apochromatic-sharpest-signature-series-binoviewer-available-for-sale/ No need as far as I know for correction in this case. There are quite a lot of threads on CN for this approach.

I usually use the GPC 2.6 option the most used in a dedicated Baader diagonal. However the other option is use a Barlow to PowerMate ahead of the diagonal. With the PowerMate gives you options of using higher power EP's, no change in exit pupil.