@3:55 Lovely image first of all. and those funky spikes I also kind of like.

PRO TIP! After Primary collimation using main adjustment screws, finish up collimation iteratively with the lockdown screws till very snug to tight. Also for the primary, start with the main collimation screws fully clockwise and primary mirror bottomed out. Loosen one a full turn then use only two of the three screws to collimate. Do the secondary in the same manner/tightness and you shouldn't have to collimate hardly ever. Of course do the secondary first :P I have a 10 inch and collimation is solid for 6 months now and it's mounted/unmounted each night. Great video!

@Robservatory

4 ай бұрын

Great pro tips! I have been doing the same for a while and collimation seems to hold well. I will be doing a video solely about collimating soon and I’ll be sure to include your advice. Thanks!

@qx3V45p

4 ай бұрын

@@Robservatory Cool! I rarely see mention of the rear fan and some actually block off the back altogether. In my experience I couldn't image without a baffled fan setup like you have. I tried using a lower CFM fan I had on hand, when my stock unit went out, but wound up getting all sorts of aberrations/ funky stars. The more air turbulence through the tube the sharper the image in my case. Huge difference. A filter on the fan help a ton too! Small scopes a clean beanie or something similar will help filter the dust! Have a great weekend.

This was an excellent video with high production value.

Nice video; thanks Rob! For my next scope, I'd like to go Newtonian but have never been around one. These are great pointers to help us understand what is involved when you end up with one. Now I just need to decide whether its a 6" or and 8" tube. Cheers man!

@Robservatory

4 ай бұрын

8" all the way! Aperture is king!

Good upgrades. Might work on my Celestron Omni 150 XLT Newtonian Reflector.

Nice upgrade thoughts. But I would put a focuser upgrade as a higher priority on the list - the stock focuser sucks to say the least.

@Robservatory

4 ай бұрын

I haven’t had any issues with it, probably because of the EAF, which keeps it from slipping.

@Lyrenoorfeu

18 күн бұрын

@@Robservatory I believe your split diffraction spikes are due to tilt from the Focuser not from the spider vanes, I have the same scope but the one with the “good Focuser” and the diffraction spikes are nice and straight. So I would recommend another Focuser instead of the expensive spider vanes.

@Robservatory

18 күн бұрын

@Lyrenoorfeu The spider vanes fixed the issue, thankfully!

Awesome Rob

Thank you very much for this video.🔭

@Robservatory

4 ай бұрын

No worries!

I feel like a collimator should be number 1 on the list 😂

Muy bien amigo buenas tomas

2:59 in my experience it isnt constant unless you are using your newt as a battering ram or your fasteners have sloppy tokerances.

Puzzled on the OAG recommendation. For a fast Newt guide stars should never be a problem on a relatively small-prism OAG? Due to the wider field of view and fast focal ratio.

@Lyrenoorfeu

18 күн бұрын

That’s right at 600 mm focal length or even less if you’re using a reducer, I would not recommend an OAG.

@jamespeirce2582

18 күн бұрын

Not necessary. But there is also nothing wrong with using one that is how someone would prefer to arrange things.

Thanks for a very useful video :) Must be awesome having an f3 scope! But I also noticed you use 3nm filter, don’t you get a lot of bandpass shift with that combo? Maybe partially offsetting the fast f ratio?

@Robservatory

4 ай бұрын

That is a good point. Antlia claims the filters work down to f3, and they do. They lose some transmission, but I can’t fire out how much. I’d like to upgrade to the high speed version and probably will at some point. I am trying my best not to spend more money at the moment!

@Robservatory

4 ай бұрын

Just a quick follow up. I just heard that the Antlia 3nm pro have been tested at 95% transmission for a parallel beam and 88% at f3.3. I would guess they are around 80% at f3, and with the mirror mask, I am probably at f3.1 or so. I can live with these numbers!

@tostativerdk

4 ай бұрын

@@Robservatorythanks for your reply, ah I see. Well then your combo makes a lot sense :)

@KaiHui-xm2mp

4 ай бұрын

Very informative!

Can you link the 6.5 piece I want to buy it

I need help locating the compression ring . Where can I find that at

@Robservatory

2 ай бұрын

First Light Optics

Where did you get the fan assembly?

@Robservatory

4 ай бұрын

Teleskop Express

no vibrations from the fan?

@Robservatory

Ай бұрын

No, I attached it with several pieces of sticky Velcro. That helps to create a buffer between the fan and the telescope and reduces the vibrations.