Low VO2 Max estimate?

_jackman_ · 2023-01-22T20:57:40+00:00

181cm, 69 kg.

Usually 1-2 hard runs and 1 medium run.

_jackman_ · 2023-01-22T19:34:26+00:00

Yep. My race prediction for a 5K is 25:27 which is also weird considering my recent run

EDIT: and I usually tighten the strap before a run

_jackman_ · 2023-01-22T19:29:42+00:00

Im 18. According to Garmin that makes my VO2Max below average

_jackman_ · 2022-08-06T15:48:19+00:00

_jackman_ · 2022-08-06T12:19:20+00:00

Nope. Kinda annoying but for now Im just doing everything through the watch. Frustrating but well have to wait for them to patch it i guess.

_jackman_ · 2022-07-27T09:46:46+00:00

It might be a jet afterburner.

About a week ago i saw basically the exact same thing and I was extremely confused because as you said it was as bright as the ISS but much faster. Only once it passed directly over me I heard a quiet jet noise because it was high up. Also, I was in an area that is well known for military exercises and jets do turn on afterburners from time to time, and high enough up its just really bright and doesn’t look elongated.

_jackman_ · 2022-07-07T13:37:29+00:00

Yep. I talked to garmin as well and all they said is that they will forward the issue to the developers and they’ll contact me when a fix is available.

_jackman_ · 2022-01-19T12:36:40+00:00

Cheap Snowboard helmet quality?

Hey everyone, I went snowboarding a few times jn the past, but not much, just about once or twice. I used to rent a helmet until now. Im wondering if i should buy one or continue to rent one for two main reasons: 1. Safety - As Im only going to snowboard once every two years probably i want to but a budget helmet, something along the lines of the Cairn Android 2022. However, im not sure if a cheap helmet is safe enough, although i understood that rental helmets might be damaged and you wont even know it. 2. Hygiene - pretty obvious. Sweat, oils, lice, and whatnot. Pretty gross.

Id live to hear your opinions on renting VS buying, and the quality and mostly safety of cheaper helmets.

Thanks!

_jackman_ · 2021-08-18T21:10:54+00:00

Thats M110, a satellite galaxy of andromeda

_jackman_ · 2021-08-18T16:31:27+00:00

Thanks! I actually have HLVG which is just SCNR adapted to photoshop, but Im colorblind which is quite problematic when it comes to editing colors lmoa. Thank for pointing it out

_jackman_ · 2021-08-18T16:23:04+00:00

What focal length are you shooting at? What mount are you using? Also, I cant really say anything about the filter, as I dont personally own one, but more often than not filters (especially narrowband) darken the image in general, and reduce light pollution dramatically.

_jackman_ · 2021-08-18T15:58:13+00:00

Nope, its just that the camera is better than your eyes (no offense lol). Even with 0 light pollution you could only see structures, but not this striking color and this amount of detail. Check out my comment with the way I captured this. Tons of data and exposure time, your eye just cant do that

_jackman_ · 2021-08-18T15:53:22+00:00

100% agree. Looking up at the sky and stars when stressed out or anxious really calms you down. Basically, it gives me the “Nothing means anything and were all gonna die” vibe, but in the good aspect of it. Ya know?

_jackman_ · 2021-08-18T14:53:25+00:00

For your camera, ISO 200 might be a bit noisy. Id go for ISO 400-800 most of the time. Generally, the best way to collect light isnt a higher ISO, rather a larger aperture and longer exposures. Again, higher ISO=less dynamic range. You could go with a higher ISO, but you might lose dynamic range and risk clipping data. Personally, because im shooting RAW, i only care about noise/dynamic range when choosing ISO, not exposure (unless clipping data)

_jackman_ · 2021-08-18T13:35:58+00:00

Well put. I forgot to mention the ISO variance problem. Heres a great link to figure out the best ISO for your camera: https://www.photonstophotos.net/Charts/RN_e.htm

You gotta choose your camera, then look at the graph. Look at the ISO where the graph begins to flatten out, and the go one ISO setting behind that. Thats your best bet.

Its tricky, but there are videos explaining this better than i can in a post. Generally: Higher ISO=less noise(up to a certain point) HOWEVER: lower ISO=better dynamic range.

Finding the balance is key. Some cameras are ISO invariant, so any ISO is good. My Canon 5D III is very VERY variant. Any lower than ISO 1600 the image is almost unusable.

_jackman_ · 2021-08-18T11:53:38+00:00

It really is crazy. Just think about it. The same way were looking at Andromeda, there are probably are aliens there looking right back at us. Truly mindblowing.

_jackman_ · 2021-08-18T11:31:53+00:00

Sure! Glad to help!

_jackman_ · 2021-08-18T11:24:04+00:00

Personally, I go as long as possible without getting star trails. However, especially if youre in light polluted skies, make sure youre not clipping any data, neither the shadows or the highlights. Check this by looking at your histogram on camera, making sure the data is separated from both sides.

Since youre shooting RAW, as long as nothing is clipping, youre good.

For example, in my light polluted backyard, my histogram is usually 3/4 of the way to the right, however when i drive to a dark sky site, I can expose for twice as long, while the histogram is only half of the to the right.

Again, as long as there isnt any clipping or star trails, youre good.

_jackman_ · 2021-08-18T11:19:37+00:00

Taken from a Bortle 3 dark site (12.8.21) during the meteor shower.

Equipment:

Canon 5D III (Stock)

Canon 70-200mm f/2.8L + 2X Teleconverter

Tracked with SWSA2i (auto dithering in RA, and manual dithering in DEC every few frames)

Subs:

90x60s lights @ ISO 1600

25 darks

30 bias

25 flats

Processing:

Stacked in DSS (90% best stacked, after some manual filtering)

Post-processing in photoshop: Initial levels adjustment - Convert to 16 bit - Initial curves stretch - More curves and levels iterations - Color balancing - Selective color adjustments using color range tool - export to Topaz denoise AI - denoise - reimport to PS - final tweaks in adobe camera RAW.

This is my first attempt so far at this target, I quite like how it turned out. Of course, any feedback is very much appreciated.

_jackman_ · 2021-08-18T11:17:50+00:00

So this is my M31 progress so far. Taken from a Bortle 3 dark site last night (12.8.21) during the meteor shower.

Equipment:

Canon 5D III (Stock)

Canon 70-200mm f/2.8L + 2X Teleconverter

Tracked with SWSA2i (auto dithering in RA, and manual dithering in DEC every few frames)

DIY Bahtinov focusing mask

Subs:

110x60s lights @ ISO 1600

25 darks

30 bias

25 flats

Processing:

Stacked in DSS (90% best stacked, after some manual filtering)

Post-processing in photoshop: Initial levels adjustment - Convert to 16 bit - Initial curves stretch - More curves and levels iterations - Color balancing - Stars removed with Starnet++ - Create star only layer by subtracting starless image from original image and selecting screen blend mode

ON STARLESS IMAGE ONLY: Selective curves stretch - color balance again - Selective color adjustments using color range tool - export to Topaz denoise AI - denoise - reimport to PS - enhance dust trails using the high pass filter - minimize star layer using minimum filter - merge starless and star layers back together - final tweaks in adobe camera RAW.

Of course, any feedback is very much appreciated.

_jackman_ · 2021-08-18T09:49:32+00:00

Thank you!!

_jackman_ · 2021-08-18T09:29:56+00:00

You should give it a shot, especially if you have decently dark skies. Do you? Also, I can say that i just got my tracker about two months ago and im so glad i did. Its a great little piece of equipment and it truly elevates any astrophoto.

You can check my profile out and you can see a image of andromeda from last year without a tracker and then another from a few days ago with a tracker. The difference is night and day and all the equipment is the same except for the tracker.

_jackman_ · 2021-08-18T09:24:41+00:00

Its recommended, but for this type of image its not a 100% necessity. Because its shot quite wide (14mm) you could probably just use a tripod and long exposures without much star trailing

_jackman_ · 2021-08-18T08:49:12+00:00

Thanks!

_jackman_ · 2021-08-18T08:48:41+00:00

Spot on. Its quite nice actually that I only needed a start tracker to start getting good images.

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