simmo39

Make that 3. I would be interested an people's thoughts on this scope for imaging too.

V nice, one of my fav targets. Hope to do this one next season.

Wow, that is stunning.

Hi Vlaiv. Thanks for the reply and the pointers. I will have to have a good read and digest what you have said. The SW 100 ED seems to be good value ( relatively ) the only real concern is the weight on my HEQ5. I will have a good look at your recemondations. Thanks once again.

Hi all, for the past few years I have been using a SW 130 pds and have found it a V good scope and have been pleased with most of the images it has produced. But, and its becoming a big but!, collimation and diffraction spikes are becoming a bit of a bug bear. I recently bought a SW 72 ED pro for wide field stuff and although I havent really had chance to use it properly it has convinced me fracs is the way to go. I should say at this point that this is a future wish list at the moment and I may have to struggle on for one more season with my 130.. Anyway to the the crux of the matter, I have a SW HEQ 5 mount and have no wish at the moment of changing it and as far as I can find out is good for upto 11KG imaging rig. I have been looking at the Esprit 100 as a possible way to go but the price is high ( for me ) and it weight with all the little extras may be v close to the 11KG limit. Do any of you out there use this scope with a HEQ 5 and if so do you have any problems? The second question is there any other good alternatives ( preferably cheaper ) that would be a good replacement for my 130 pds. Oh the camera I use is a Zwo 1600mm with filter wheel. Thanks in advance.

V nice Geof, V deep.

Thanks, Im at 65.5mm I think I need to go back a little to get it at its best. Im really impressed by the scope and the TS FR/FF seems to work very well with my camera set up.

Hi, managed to get a single Ha frame in last night just to test spacing. The spacing is still a little off but here is a 240s sub tweaked a little i PI. Think Im going to like this scope!

Thank you, That does help. Now if you can calculate the clouds away that would be brilliant!

So what is your average RGB sub lenght, L is 15s that seems v short. I think with number crunched by my poor head 60s for L but that could be off as I guessing the bits I dont understand ! lol. At least I have got a starting point all I need now is the weather to cooperate.

BTW, I think the SQM value here is: 20.4–21.3

Hope it works, I use APT and im not sure if it works the same.

from the numbers i would say my light pollution is average. I have no idea about SQM sorry.

Hi Vlaiv. Thanks for the reply. I'm going to be using my new SW 72ED. Think it's about F5. Comparing to my SW 130 PDS is F4.8 I think. I have been using 240s subs for narrow band with that and was hoping that 240s for NB would be good for the 72ED. As for the RGB I was thinking about 120s, do you think that would be a good starting point or should I see if I can push it to 240s?

Hi, thanks for the pointers. I think my light pollution is classed Bortle 4 - 5. I will have a look at the CN site, once again thank you.

Hi all, I know this has been asked before but i cant seem to find the answer. I have been doing Narrow band since I got the camera but with galaxy season coming I treated myself to some RGB and L filters. I have set my gain to 200 for the NB but will go back to unity gain for RGB. Im just wondering where to start my subs at, I thought about 120s for the RGB but what about the L? is that the same and also what kind of ratio am i looking at between RGB and L? Thanks in advance.

Hi all, I braved the winds last night just to see if I can get focus with my 72 ed using the TS ff/ reducer with my ASI 1600mm and im glad to say I did with no problems. I have still got to get the spacing right but from the single shot I took last night it all seems do able. There was plenty of Focus tube left! thank you all those who pointed me in the right direction. cant wait to use this scope in anger!

Thats it, no good weather for at least a month then! lol. good luck hope it all works out well.

Well, Got my 72 ED this week, Also went for TS FF/fr. I have had a quick set up pay in the house but as usual the weather not letting me test it. Also for those interested the SW auto focuser fits no problem. I have set the spacing for the FR to 65mm for the first test, does that sound about right? Im using a ZWO 1600 mm pro and narrow band filters for this set up so wish me luck!

Oh well, I'll be looking at the TS one more expense! Hope you get sorted.

Hi, well I hope you can get it sorted. weather is going to be a pain for the next few weeks. think ill be going for TS one if you dont have any luck. All the best. Andy

Any news on this FF/ fr ? Just waiting to see which one to go for.

Thanks for the pointer.

looking good, hope the stars are ok, if so i will get the WO ts/r.

Looking forward to hearing your thoughts on the William Optics flat 6a. Hope it works, it will save a few quid if it does!