My first ever attempt at using my 3 nanometer filters. This allows light into the camera at only one specific wavelength: 656.3nm +/- 1.5nm. This means that pretty much all the light pollution is shut out.
Here is the horsehead nebula in Hydrogen Alpha! #Astrophotography
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This is a total of 80 minutes of exposure, and the fine details like the mists of gas rising from the ridge near the Horsehead itself are 🤯🤯.
As I add more data (soon this nebula unavailable to me, will need to wait until November!), this will get smoother and more defined.
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By combining it with RGB colour data (Hydrogen alpha is in the red spectrum), I can really make the colours pop!
I'm working on a final version, and it will be GLORIOUS!
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And this is the light pollution I cut throug to take the image.
I love the physics of this hobby~ not a fan of the hours and the cold, though!
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Yes Tracy, because we actually have expertise in relevant areas, like child development & mental health.
Your awful summary &stance on mental health during covid measures is *not* scientific or expert, and despite no expertise you have been wrongly writing & opining for >1y
In March 2021, you opined with other MH non-experts Gandhi, Henderson, and Johnson that "COVID-19 deaths in children and adolescents are magnitudes smaller than deaths from suicide, some now driven by school closure"
An incredible survey: @emma_soneson and colleagues asked 17,000 UK students *during lockdown* how they felt compared to prior... and ... guess what?
65% say they did about the same or better, 34% said they did worse.
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In fact, during both the school and non-school conditions of lockdown (the UK had a period where everything BUT schools was locked down), the "worst group" was lowest.
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And really, you just have to read their excellent report. But look at the confounders! A decrease in bullying was strongly related to an improvment of happiness during lockdown.
Anyone parent citing how "happy kids are" taking off masks as evidence that masks are harmful should consider how happy they are when mommy gets McDonald's + ice cream cake, or when mom+dad leave for the weekend giving them the house to themselves, or when school is out.
Children are allowed to express their excitement when things change or are more comfortable, and undeniably taking a mask off is a relieving feeling.
Excitement and happiness about something changing for the better is a good thing.
On the same token, kids are able and equipped to know that some things we don't want to do naturally (like wear pants or wash our hands before we eat or have asparagus instead of donuts) are also okay.
Most kids in Canada and worldwide do not seriously perceive harm from masks.
A ***child and adolescent psychiatrist*** in the US thought this was a good idea to post. He's now deleted it. I won't retweet the original but suffice it to say I have serious concerns about him. Developmental disabilities a core competency of C&A psych and this is abhorrent.
I have seen many people use this word publicly, derogatorily, and comedically, and it sucks every time. But a child psychiatrist using it to mock is beyond reproach. @MedBoardOfCA should take seriously: this harms the safety and dignity of patients and families of children.
Time stamp and link to tweet (in case it is deleted)
(Add twitter dot com to beginning, I am not linking to that vile crap )
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Suicide and Age, 2020-2021
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A way to visualize the change in suicide rates during the pandemic is to plot the "Age curve" of suicide. This is another "Tyler Black exclusive" graph - possible by the single-age years in @CDCgov WONDER.
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Here, you can clearly see an average 2020-2021 suicide rate in 0-20 ages, but quite a flattening occurs throughout 20-70 years of age, whereas in 2017-2019 there is the typical (goes back decades) "midlife hump" of suicide rates.
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Boys and men, who die more by suicide than girls and women, again show a relative following of the curve until midlife ~45 or so, where a clear "flattening" occurred in 2020 and 2021.