Milky Way imaging advice please

[Petrol]

This is what I managed to get from 4 X 30S subs taken with a Canon 1000d and standard lens. I took this about 3 years ago using a fixed tripod from the McDonald observatory in Texas - Bortle 2





A very poor effort but the view of the Milky Way was breathtaking!
I've done a bit of widefield using a Samyang 135 F2 but want to try some Milky Way shots. I've just bought a Samyang 14mm F2.8 lens and fitted it to my mobile rig to test.






I'll fire a few shots off whilst I'm imaging with the 135mm to see what I get but I have a few questions.
I plan on using an Astro modded Canon 600D (LP #2 removed) Should I use a clip in filter? I have an Astronomik CLS and Skytech Quad band filter but not sure if these will be any use.
I have a couple of ZWO ASI OSC camers, would this be better than the Canon considering the short sub lengths? If so with or without a Dual band filter?
Still not sure if I'll need to guide with such a wide angle and short sub length. If I could use the Canon on a tripod it would be great to take to dark sites as a grab and go setup.

Thank you for looking and I'd be grateful of any help or advice.
Clear skies,
Pete

[JayTee]

If you keep your exposures to less than 31 seconds, then any camera will do. Don't use the Quad band just yet.

[AstroBee]

Trying to fire off the shutter on the DSLR while imaging at 135mm with the ZWO is sure to introduce vibration from the mirror slap. I wouldn't recommend using both rigs at the same time.

[SkyHiker]

For a non-tracking mount, you will lose a lot of light when using filters. For wide field objects like the MW with mostly broadband light, filters are probably not effective.

With the first image you can see 2 effects, the combination of field curvature (lens imperfection) and non-tracking. The combination of this leads to vertical streaks in the rightmost corners and horizontal/skewed streaks further to the left. A field flattener could get rid of half of that.

With a rig as fancy as yours you may want to consider getting a motorized mount. Any kind of tracking will help.

If you have a good photographic mount, you can image the entire MW by shooting 30 second shots with a regular lens if you cover the entire section of sky then stitch them together with MS ICE. It works quite well and, since each shot is a small part of the picture, any lens imperfections are reduced a lot as compared to using a single short focal length F2 lens that costs a lot of money and will probably show flaws unless it is exceptionally good.

[Petrol]

Thanks for the replies, much appreciated. I won't use both rigs at the same time. I'll not bother with filters. Short gap in the clouds last night so I took a couple of test shots from my back yard - Bortle 5.

Fixed tripod
Modded Canon 600D
Samyang 14mm F2.8
30s exposures using an intervalometer






I might be able to get some decent images from the right location with this combo. Maybe take a few subs, darks, flats and stack them.

Thanks for looking
Pete

[AstroBee]

Looking great so far!