Dobsonian Astrophotography

[keen orbit]

idk

[woeful flicker]

Moon Mars occultation taken with celestron star sense 8”

[late cosmos]

its so bad, the venus i see is nothing but a rainbow 😦

[mossy glen]

Terrible 5min process and bad pre processing, it'll be better tomorrow

[past crane]

Terrible????

[novel grotto]

you used an h alpha filter for visual?

[late cosmos]

its h alpha for ccd cameras, but yes i view it visually through nv

visual h-alpha dont work on nv, ive been told

[keen orbit]

wwhen did that happen?

[novel grotto]

damn how much was your night vision

[late cosmos]

something similar to what i wanted.. either 14" premium dob or nv.. i chose nv

[novel grotto]

how is it

nv defo out of my price range i just wanna know

because u only see videos with it but what abt actually looking through it

[teal oriole]

yeah

i need to collimate

[late cosmos]

im in bortle 9.. if i was in bortle 5 or lower i maybe wouldnt need it that much, but now its quite good.. idk, good telescope is just as important.. nv bloats stars quite a bit..

[burnt imp]

How can I attach my dslr to my dob?

[silk pasture]

using a t-ring and barlow

[burnt imp]

Ok

[burnt imp]

I saw a video where you could screw your camera in. When I try to do it with mine it doesn’t work. Video was shot at night so I couldn’t get a good view but I believe all he did was crew it in. Do you know if that’ll work on every dob?

And he used a t ring

[silk pasture]

can you send the video

[burnt imp]

https://youtu.be/b1E3K9rU9A4?si=V30G_wl0M4SQmFmg

It’s possible I missed something as I watched it while I was outside in the cold. I skimmed through it

[sage meadow]

his dobsonian has threads or he put something in it

if yours doesnt have that then yeah you cant just screw it on

[silk pasture]

in that case you'd use a t-ring

[burnt imp]

I didn’t know if it was only for his model or if it was another extension needed

[sage meadow]

to put it in the place your eyepiece would normally go you need a t ring and a barlow like sword said

you probably wont be able to reach focus without a barlow

if you can you can just unscrew the lens

[burnt imp]

Can I get a visual of that so I can see it and so I dont mess up my things?

[silk pasture]

what

what do you want a visual of

[sage meadow]

if thats what you mean

just found that on google

with my newt i dont use a barlow since i can move the secondary in closer, at full extension like a normal newt would be i cant reach focus

you can move the primary mirror forward a bit on a normal newt but it might not be enough to get focus

[burnt imp]

Ok thanks. I’ll send pics tomorrow of what I have to see if I did it correctly

[sage meadow]

if it works and you can reach focus then you did it correctly, no need to send pictures

[wild ferry]

anyone got any tips on how i can achive focus on the stars with my dslr + dob

it just seemes like there is no focuspoint

[silk pasture]

youll need a barlow. dslrs and dobs cannot reach focus on their own unless you mod the mirror position

[burnt imp]

So would this work?

[sage meadow]

try it

[burnt imp]

I tried a while ago and the only way I could get it to work was if I had the 1.25” eyepiece stick out the bottom. Only problem was that the small piece was the only thing the locking screw could touch so I had to support it

Results weren’t the best and I could only image planets and the moon

[wild ferry]

i know but i already do use a barlow and it seemes like im always focusing to far or to short.

[silk pasture]

Just keep moving it until you reach focus

[wild ferry]

and i can focus on the planets or the moon but stars wont get starshaped

[silk pasture]

That would be coma

[wild ferry]

oh

damn seems like i need a coma corrector 😒

[signal edge]

With a 6” dob flextube and iphone 15 pro using astroshader

[coral lynx]

yeah same ay i just took off the lens it fits in there good as it just dosent screw in but if ur cheap u could just ducktap it there

[sage meadow]

it will fit fine yeah

but make sure you can reach focus without the lens in there

[coral lynx]

yeah have u tried takin photos like that? and is it any good

[sage meadow]

not with a dslr no

[burnt imp]

M81 and M82 through an 8” dob. Taken with a phone.

[wild ferry]

my first moon mosaic
any advice welcome

[grave sky]

Some of my untracked 8"dob images

Horsehead and Ngc2023 from monday (1min each)

[celest grotto]

Tell me your secrets

I can't get over how cool orions core looks

[burnt imp]

So to attach my dslr to my dob I would need a Barlow and a t-ring right?

[past crane]

I don't think you need a barlow.

[silk pasture]

Natively a dslr cannot focus on a dob without a barlow

[past crane]

Is it just using the barlow as a spacer or is there another reason as to why?

[silk pasture]

For a dslr to focus, you need more inward focus. A Barlow adds a lens which extends the light path so that you reach focus

[past crane]

So the barlow is just a fancy spacer.

[silk pasture]

Yea somewhat

[uncut pond]

Tried stacking the one on the left with APP had walking noise then I stacked it in Siril and it magically wasn't there

Canon EOS M10 telescope bresser messier 5" 0.5 sec exposures 567 lights 47 biases 103 darks 21 flats

I have another 600 lights so I'm going to stack that too

[stark gorge]

It’s like a negative spacer

[grave sky]

Ir pass filter + zwo asi 224mc (9mins of expoture)

At 100ms subs

[past crane]

Got it

[hazy umbra]

Why no one mentioning NGC 1999

Looks awesome

[grave sky]

thankyou

its really sharp

[novel grotto]

Mine does lol

i have to reduce spacers

[coral lynx]

yeah same

[silk pasture]

https://tenor.com/view/i-saw-w-gus-fring-gus-gustavo-deleted-gif-25440636

i am disapointed.

[deft vigil]

dude thats awasome u use astrocamera or dslr

[grave sky]

224mc zwo

[deft vigil]

nice

[wary oak]

@azure lily when you are doing deepsky lucky imaging are you live stacking or just saving the individual frames and stacking them after?

Could you give me your hole process?))

[azure lily]

i do live stacking sadly because i’m lazy

[wary oak]

At what focal length and what camera?

[azure lily]

but if i would do individual frames and get with nina, i would get even better results

[azure lily]

250/1200 585mc pro

friday i’m getting a whole new thing

12p quattro on eq 8

[wary oak]

What

Damn

That’s cool

I have a manual 12” with a homemade Eq plate

And an imx224

But I use a reducer too

This is my fov

[azure lily]

very nice

might be a slight out of focus though

[keen orbit]

ye it is

[wary oak]

Really?

My stars are always really bloated like that idk why

[unreal jackal]

Something called seeing

[naive matrix]

Skywatcher 8" Dob + SV605CC (IMX533) + IR/UV cut
3s x 1893 (1h 34m)
Bortle 8/9

[pallid hare]

1400 photos, .4 second exposures over 2 nights, 10-inch manual, Bortle 7 (I forgot to collimate, and some exposures wobbled; that's why my stars are so bad)

[novel grotto]

Have any of you guys tried using an asi air?

[deft vigil]

4 secound exposures with no tracking? how

[pallid hare]

0.4 second exposures

[deft vigil]

ok

[keen orbit]

how did you find m51 in b9?

with a dob

[keen orbit]

also did you live stack it?

if yes which app did you use

[keen orbit]

did you livestack?

[naive matrix]

I thankfully have a goto dob that gets (very) roughly in the right direction. From there I crank the gain way way up and do some star hopping with the finder until I can see a fuzzy patch on the screen that looks like it.

According to the light pollution maps I'm technically b8 but it's just on the edge. It gets much harder when the moon is out too

[pallid hare]

no (not my stack, though)

[keen orbit]

did u took 1400 singular exposures?

[pallid hare]

unfortunately, it was with my DSLR over 2 nights

[silk pasture]

Hello.

Guess what focal length I'm at

[wary oak]

1500

[silk pasture]

2440

[frozen flint]

Holy moly

[wild ferry]

but with barlow lens right?😅

[silk pasture]

Yes

[pallid hare]

wow

lots of fl, almost the same as my 1270mm dob

[pallid hare]

noise

https://tenor.com/view/fuzzy-fuzz-static-noise-gif-11729195

no difference

[past crane]

What am I supposed to compare?, all I see is 2 images of static.

[pallid hare]

lol

[burnt imp]

Still looks better than my pictures.

[azure lily]

b

[wary oak]

C

[coral lynx]

d

[signal edge]

e

[coral lynx]

f

[coral lynx]

what did u use to stack cuz siril wont do it cuz its not perfectly aligned not even 1/50 will work

[pallid hare]

DSS

but Im moving to astrosurface

[coral lynx]

i have a mac🤦‍♂️ can u use astrosuface with mac??

[pallid hare]

Don’t know

[runic fable]

Untracked mosaic

[calm wyvern]

nice

[pallid hare]

reviving this

[calm wyvern]

this forum is so dead

[deft vigil]

i don t think so

[calm wyvern]

well the 2nd most recent post is from may 5

[naive matrix]

It's hard mode in a hard hobby :/

[pallid hare]

no more dob ap for me sadly

[exotic carbon]

think you could send the raw data for this shot?

because to me it seems like the colour is way off. maybe a bad debayer

[pallid hare]

it was a bad debayer

I might have it somewhere I have to check

[fast oracle]

revive

[calm wyvern]

revive

[ornate gale]

revive

[fast oracle]

revive

[deft vigil]

revive

[fast oracle]

revive

[viscid pagoda]

revive

[pallid hare]

ill start reviving this

[fast oracle]

Okay I will too

[deft vigil]

gotta revive again

[fast oracle]

Updated*

[deft vigil]

that looks cool

[fast oracle]

Thankuuu

[deft vigil]

maybe ill try when i finish my dob