#markarians chain 1.5 hours 300mm f2.8
ornate bough
tropic island
As I'm looking at the strechted image, I can see that you took subs without them being sharp... and much noise! Mabye try to take subs with lower ISO. Here's my process of your date tho:
ornate bough
what do you mean without being sharp.
dew was pretty bad but i dont know if a dew heater made for my 8in telescope will work on my 300mm f2.8 lens
cursive forge
what do you mean without being sharp.
It's a bit out of focus. ;)
There is not a huge amount of signal but that's what I got out of the data:
ornate bough
really hard to focus with my camera lens since a tiny movement throws it off
cursive forge
really hard to focus with my camera lens since a tiny movement throws it off
I'm aware of that too, but wanted to mention it.
ornate bough
is there a way to use a bahitinov mask for it? i cant find one that fits my 300mm f2.8 lens. it has a filter drawer so idk if i can put one in there or what?
cursive forge
What lens is it exactly? For a bahitinov mask just the outside diameter is important.
ornate bough
its a nikon 300mm f2.8 vr1 lens. dx. not sure exact since my uncle gave to me
about 107mm but not sure
idk
cursive forge
You could just get an adjustable one (similar to this) and it should work just fine on most lenses 😉
https://www.highpointscientific.com/astrozap-full-aperture-aluminum-bahtinov-focus-mask-for-2-5-5-5-od-telescopes-az501
If you have or know someone with a 3D printer you could easily print one.
ornate bough
ok. i already have one for my 8in. if i made holes for the little screws would it still work?
cursive forge
That depends on how thick the structures are for the 8in mask.
If one stripe covers half the lens that won't work. 😆
cursive forge
Hmm... could work (costs you nothing to try it 😉 ) but it looks a bit thick to me:
ornate bough
dang its so flimsy ngl
do you think it will ruin it if i try and make new holes with a power drill?
cursive forge
I'm not sure I would do that, very easy to split the plastic 😅
Can't you fix it another way first and try if it actually works? Just something between the stripes or some tape.
azure panther
As I'm looking at the strechted image, I can see that you took subs without them...
why lower ISO, its really noisy so u would want gain up not down
besides since galaxies r so faint its no full well issue
theres a good explanation on gain on cloudynights forum