20 replies to this topic

[DMJoyce951]

I was initially planning to get somewhere around 15 hours on this but ended up pretty happy with how it looks now so I’m considering this complete:

 

 

- H: 54 x 120” (1h 48m)
- O: 86 x 120” (2h 52m)
- S: 62 x 120” (2h 4m)
- 6h 44m total exposure time
- Celestron 8” SCT
- Celestron CGEM II
- ZWO asi1600mm Pro
- Svbony 60mm guide scope
- ZWO asi224mc (guide camera)
- ZWO AsiAir Plus
- Celestron 0.63x Reducer/Field Flattener
- Antlia 3nm narrowband filters

[Skysmacker]

Very nice!

[Cfeastside]

Really nice composition and color saturation!   I was just thinking this morning i should try m16 with my 9.25 for a similar composition.

[Etoimos]

Image looks great!

 

 

- H: 54 x 120” (1h 48m)

- O: 86 x 120” (2h 52m)
- S: 62 x 120” (2h 4m)

How did you arrive at those times for each filter?  Was it just what you were able to get with the conditions or did you pick 2 and 3 hours for a reason?

[DMJoyce951]

Thank you all for the kind words!

 

Image looks great!

 

 

How did you arrive at those times for each filter?  Was it just what you were able to get with the conditions or did you pick 2 and 3 hours for a reason?

No particular reason for the exposure times on each filter, just what I could manage to get each night. I did want to pick up extra oxygen since I knew the Ha was pretty strong in this region. 

[Etoimos]

Thank you all for the kind words!

 

No particular reason for the exposure times on each filter, just what I could manage to get each night. I did want to pick up extra oxygen since I knew the Ha was pretty strong in this region. 

Thanks.  I'm strongly considering a mono setup when I finally make the jump to a dedicated astro camera, so any little bit of info helps.  Do you typically shoot a single filter per night, or do you shoot X number of subs on one filter and then move on to the next and repeat that cycle for as long as you can?

[DMJoyce951]

Thanks.  I'm strongly considering a mono setup when I finally make the jump to a dedicated astro camera, so any little bit of info helps.  Do you typically shoot a single filter per night, or do you shoot X number of subs on one filter and then move on to the next and repeat that cycle for as long as you can?

I switched from OSC to mono back in October and have loved it so far! With this particular target, it’s only visible for me for a couple of hours per night so I spent 4 nights on it, one for each filter except I did 2 nights for oxygen and picked up as much as I could get before sunrise each morning. Even though the filters I use are supposed to be parfocal, I still make sure to run an autofocus routine between filter changes if I do switch throughout the evening.

[Etoimos]

I switched from OSC to mono back in October and have loved it so far! With this particular target, it’s only visible for me for a couple of hours per night so I spent 4 nights on it, one for each filter except I did 2 nights for oxygen and picked up as much as I could get before sunrise each morning. Even though the filters I use are supposed to be parfocal, I still make sure to run an autofocus routine between filter changes if I do switch throughout the evening.

What filters are you using?

[smiller]

Amazing details, well done!

[DMJoyce951]

What filters are you using?

I went with Antlia 3nm 31mm filters and have been really happy with them.  I almost went with Optolong but had some halo issues with the l-eXtreme I had before and read that their narrowband filters had the same problem sometimes.

[AdrianoMS]

Very nice image of M16.

[Etoimos]

I went with Antlia 3nm 31mm filters and have been really happy with them.  I almost went with Optolong but had some halo issues with the l-eXtreme I had before and read that their narrowband filters had the same problem sometimes.

So I guess you have not had any halo issues with the Antila filters?  Agena has a warning on their site that Antila filters cannot be returned for halos around bright stars.

[DMJoyce951]

So I guess you have not had any halo issues with the Antila filters?  Agena has a warning on their site that Antila filters cannot be returned for halos around bright stars.

I’ve seen that disclaimer but no, I haven’t noticed any halos whatsoever. 

[fmendes]

Very good image! Makes me wonder what are the definitions between "beginner" and "experienced" deep sky imaging. To me, this is experienced stuff!

[unimatrix0]

So I guess you have not had any halo issues with the Antila filters?  Agena has a warning on their site that Antila filters cannot be returned for halos around bright stars.

The whole halo-stuff with filters is overblown issue, especially on this forum. I use antlia filters and never seen any halos.  Not every forum topic should be taken as stone-cold hard truth. 

[Etoimos]

The whole halo-stuff with filters is overblown issue, especially on this forum. I use antlia filters and never seen any halos.  Not every forum topic should be taken as stone-cold hard truth. 

I agree, but when the filter manufacture states that their filters can have halo issues I think it is a fair question to ask. 

[DMJoyce951]

Very good image! Makes me wonder what are the definitions between "beginner" and "experienced" deep sky imaging. To me, this is experienced stuff!

Thank you very much! I never know where to post, I’ve been at this about a year and half or so and still feel like I have plenty more to learn!

[CowTipton]

Gorgeous photo!

[Robert7980]

Very nice Eagle image I’d be proud of that for sure… Pillars look great! 

 

So I guess you have not had any halo issues with the Antila filters?  Agena has a warning on their site that Antila filters cannot be returned for halos around bright stars.

I’ve got all Antlia filters haven’t seen an halo yet that was obnoxious, and anything they do is easy to control… They are awesome filters for the money… 

[Look at the sky 101]

Exquisite shots. 

[Drothgeb]

I agree, but when the filter manufacture states that their filters can have halo issues I think it is a fair question to ask. 

That was mostly with their earlier filters. Lately, it doesn’t seem to be too much of an issue. I have 2 sets plus of Antlias, and I haven’t seen any halos yet. I think Antlias and Astronomiks are the best mid price filters out there, but Astronomik doesn’t the tighter bandwidth filters like Antlia.