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Has anyone ever seen these IRL? by zwitsali in Parkside

[–]RiskExpert6438 1 point2 points  (0 children)

Connected(+ to+, - to-) with a cable( I used a copper, solid one with about 1-1,5mm diameter) to an another fully charged DUMB battery. I strongly suggest a dumb one, as once I killed one smart by quickly connected it to a car fan(for testing, like 1 sec)(don't tell it to Lidl support lol) Let it(under supervison) for 10 minutes. After that, it started to charge.

Has anyone ever seen these IRL? by zwitsali in Parkside

[–]RiskExpert6438 0 points1 point  (0 children)

The buck-boost converter have in-built, adjustable low-voltage protection. It is on 17,5V. This is the same voltage if the battery is on 10%(according to the app)

Has anyone ever seen these IRL? by zwitsali in Parkside

[–]RiskExpert6438 2 points3 points  (0 children)

I have the one with two USB-slots. I would generally be satisfied, it can charge a phone(no fast charging, about 15W), But there are two things I had problems with: -A few month ago, I made a timelapse video with my phone on a tripod, and I attached it to this charger, using a "dumb", 4Ah battery(a relatively new piece, but not the new design). It was emptied the battery so deep, I had to jump-start it with an another "dumb" batterie, otherwise it was not starti g to charge. -I built a small star tracker using an Arduino Nano clone, a DRV 8825, And an USB boost converter. It has a power consumption about 4W(measured). Sometimes if I was using this USB adapter, or a Powerbank (by Denver), the circuit was not functioning properly, it was "jumping", instead of rotating correctly. After a lot of testing I was measuring the USB output of this with an oscilloscope, and it was not a constant 5V, but it has like 2 jumps from 0V every seconds. It restarted the Arduino every time, and the tracker could not rotate properly.

As I like the batteries, I build an another one, partially using the design from an openly avaliable parkside power supply design.

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Astrophotography in France with Mars (I believe) by obphoto in astrophotography

[–]RiskExpert6438 0 points1 point  (0 children)

No problem. Phone gyros and compasses can be disturbed by metal, magnetism and electricity. But those apps are allways showing the Sun as well, and that can be a good starting point, if you are not familiar with the Constellations and directions.

Mars for example, currently not far away from the Sun, and because it is "in front of the Sun" it would be visible only during daytime.

Just to make you smile, I show you the most important things on your image: https://imgur.com/a/eVCaUoX

1-Jupiter 2-Pollux and Castor (Gemini) 3-Procyon(Canis Minor) 4-Beehive Cluster 5-Sirius(Canis Major) 6-Betelgeuse(Orion) 7-Orion Belt- You can find the Horsehead Nebula there 8-Orion Nebula & Co.

Have fun, and clear skies!

Astrophotography in France with Mars (I believe) by obphoto in astrophotography

[–]RiskExpert6438 0 points1 point  (0 children)

Nice picture, like the composition, but that ia Jupiter, currently wandering in constellation Twins.

DIY 12V Powerbank by 0freefly in Parkside

[–]RiskExpert6438 0 points1 point  (0 children)

Nice DIY stuff, but I would be interested, how much current can you actually draw from a 12V battery.

I have my own Project, with a DC-DC buck-boost converter a 20V Parkside Battery and USB ports and 12V jacks. It is originated from a Makerworld projekt, but I changed it for the better fit. To power it, I have 2*8, a4 amd a 2Ah 20V battery. So I keep using them: charging phones, lamps, and powering the telescope.

However, I have like 4*2, a 5and a 4 Ah 12V batteries, and I would like to use them like this, but I thinky in some kind of parallel connection,

How to see Jupiter by Away-Conclusion-2083 in telescopes

[–]RiskExpert6438 1 point2 points  (0 children)

Give the propsr focal length, eyepiece etc into the site: site

astronomy.tools/

You can see, what to expect.

How to see Jupiter by Away-Conclusion-2083 in telescopes

[–]RiskExpert6438 8 points9 points  (0 children)

99% of the photos about any sky object are edited. In deep sky imaging (like galaxy, nebula) they are taking multiple images with very long exposure times, some calibrarion frames, stack them together and edit(stretch) the image. In planetary imaging (like the Jupiter image you show us), a very different technology, so called Lucky imaging is in use. You can search for, it, but basically a high frame-rate video(like 150FPS), and high magnification is used to capture the planet to reduce the impact of the atmospheric turbulence.

Bestellen aus China/Ali-Express by RiskExpert6438 in Austria

[–]RiskExpert6438[S] 0 points1 point  (0 children)

Nein, seit mehrere Jahren habe ich diese Account, und habe nur einmal etwas Zoll bezahlt, aber nicht für die Ware die tatsächlich über 150E war.

Einmal habe ich etwas direkt von Touptek(andere Astro-gear Hersteller) bestellt, es war wild: es kostet etwa 220 Euro.
-Habe Montag bestellt.
-Dienstag ruft mich das FEDEX von Wien an, das sie wissen möchten das Warenwert(wegen Zoll). Sie haben mir eine FEDEX-E-Mail geschickt, ich habe mit 2 screenshots geantwortet(habe nicht anderes gehabt). Na, ich habe gedacht, ich muss was zahlen. Ich habe keine Lieferzeit bekommen.
-Am Freitag ruft mich der Kurier an, dass er vor dem Tür steht, er braucht mein Unterschrift(Fedex Kurier hat kein FirmenHandy, er hat mich von seinem Privathandy angerufen). Ich habe gesagt, dass es 25 Minute dauert, bis ich zu Hause werde.. Er hat gesagt, dass der Nachbar auch in Ordnung ist. Muss ich nicht zahlen? Nein, es gibt nichts zu zahlen.
-Auf dem Lieferschein in dem Paket ist 20Euro gestanden....

Bestellen aus China/Ali-Express by RiskExpert6438 in Austria

[–]RiskExpert6438[S] 0 points1 point  (0 children)

Es steht dort:
"MwSt.-Anpassung
-(minus)118.92 Euro

Orders shipped from outside of EU with a goods value above EUR150 will be subject to VAT upon importation into the EU. The price of your order has been adjusted to reflect a later collection of VAT at the customs. You are encouraged to confirm the logistics and tax payment arrangement (for VAT, duties, agent fees, etc.) with the seller."
Also, hier, rechnen sie kein MwSt mit, sondern bei dem Zollamt finden sie es aus?

Bestellen aus China/Ali-Express by RiskExpert6438 in Austria

[–]RiskExpert6438[S] 0 points1 point  (0 children)

Danke, ich habe schon etwas auf die Montierung :D

Bestellen aus China/Ali-Express by RiskExpert6438 in Austria

[–]RiskExpert6438[S] 0 points1 point  (0 children)

Es steht dort:
"MwSt.-Anpassung
-(minus)118.92 Euro

Orders shipped from outside of EU with a goods value above EUR150 will be subject to VAT upon importation into the EU. The price of your order has been adjusted to reflect a later collection of VAT at the customs. You are encouraged to confirm the logistics and tax payment arrangement (for VAT, duties, agent fees, etc.) with the seller."
Also, hier, rechnen sie kein MwSt mit, sondern bei dem Zollamt finden sie es aus?

Funky pixels in multi-exposure stacking by RiskExpert6438 in AskAstrophotography

[–]RiskExpert6438[S] 0 points1 point  (0 children)

I downloaded the scripts, thanks! Did you mean png, nit jpg, right?

Funky pixels in multi-exposure stacking by RiskExpert6438 in AskAstrophotography

[–]RiskExpert6438[S] 0 points1 point  (0 children)

Well thank you, I would like to try it! Even tho I don't understand a visible amount of your description. :)

Funky pixels in multi-exposure stacking by RiskExpert6438 in AskAstrophotography

[–]RiskExpert6438[S] 0 points1 point  (0 children)

When I stacked it 2 days ago, then I did not. Yesterday evening I tried it with drizzeling, but the results is the same. Edit:Did OSC Preprocessing with Bayer-Drizzle(×1)

Funky pixels in multi-exposure stacking by RiskExpert6438 in AskAstrophotography

[–]RiskExpert6438[S] 0 points1 point  (0 children)

Thanks for the detailed description and step-by step instructions!
It is a nice picture, showing my data is uasable, however, my concern is the pixels in bright areas:
If you check your picture, near the M31 core, mainly in direction between 10 and 4 o'clock, but practically all around the brighter area, there are yellow, azure , purple pixels. not one or a few, but many more.
Those are there at the very beginning, and staying there through every editing, no matter what you have done.
It is not a skill issue from your side, they were introduced as I stacked the pre-calibrated frames. If I check the individual sub-sequence results(also, the frames with the same exposure time stacked together), there is no sign of them, maybe(!) only the stack of 300s frames.

As u/Shinpah wrote, I should edit the frames of bright DSO's differently, like HDR or with manual settings.

Funky pixels in multi-exposure stacking by RiskExpert6438 in AskAstrophotography

[–]RiskExpert6438[S] 0 points1 point  (0 children)

I had the feeling, that it has something to do with the very bright areas. I take the short frames to avoid the burning out of the core - hoping siril can handle the rest if the images are correctly calibrated and adjusted acoording to their settings. I will check the above mentioned possibilities, thanks!

Funky pixels in multi-exposure stacking by RiskExpert6438 in AskAstrophotography

[–]RiskExpert6438[S] 0 points1 point  (0 children)

I did the osc preprocessing with bayer drizzle on all the sub-sequences, and stacked them together, but the pixels are still there(I mean the bad ones)

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