Cov txheej txheem:
- Khoom siv
- Kauj ruam 1: PROTOTYPING
- Kauj ruam 2: BOX + ASSEMBLY
- Kauj Ruam 3: YUAV UA LI CAS SIV
- Kauj ruam 4: RESULTS
Video: Astronomy Intervalometer: 4 Kauj Ruam (nrog Duab)
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25
Ib qho kuv nyiam yog Astrophotography.
Astrophotography txawv los ntawm kev yees duab ib txwm, thaum koj thaij duab hla lub tsom iav, vim tias galaxies thiab nebulae tsaus, koj yuav tsum siv lub koob yees duab ntev ntev (30s mus rau ob peb feeb) thiab nce ISO (800 txog 6400) tab sis nrog cov teeb tsa no, kev yees duab yuav muaj qhov tsis zoo (suab nrov, vignetting, …)
Kev daws teeb meem yog txhawm rau txo lawv yog photoshop, tab sis muaj teeb meem: los ntawm kev txo qhov tsis zoo, lub teeb liab yuav raug txo kom tsawg.
Txhawm rau kho qhov ntawd, muaj ib txoj hauv kev hu ua "Stacking", peb thaij ntau cov duab ntawm tib yam khoom (cov npe hu ua "teeb"). Los ntawm kev teeb cov teeb no, peb tuaj yeem nce lub teeb liab/qhov tsis sib xws, yog li tam sim no peb tuaj yeem hloov kho nws hauv software yees duab zoo li photoshop, lightroom lossis The Gimp.
Txhawm rau txhim kho qhov sib piv ntau dua, peb tuaj yeem siv "DOF" thiab siv lawv hauv kev ua ntej, DOF yog peb yam duab (Tsaus, Offset thiab Flat) peb xav tau tsawg kawg 40 ntawm txhua qhov.
Txhua DOF kho qhov tsis raug tshwj xeeb:
Tsaus: kho lub suab nrov nrov vim raug ntev (lub suab nrov no nyob ntawm qhov kub)
Offset: kho lub sensor lub suab nrov (lub suab nrov no tshwj xeeb rau txhua lub sensor)
Pav ca: kho vignetting
Yog li txhawm rau coj cov duab ntev ntev tau txais, Kuv tau tsim lub tshuab ntsuas lub sijhawm: Kuv xav kom nws thaij duab ntawm kuv lub koob yees duab reflex ntawm X vib nas this ntawm eposure nrog 2 vib nas this ntawm txhua qhov.
Khoom siv
- 1 x Arduino nano
- 1x4 tus lej 7 ntu ntu
- 1x rotary encoder + pob qhov rooj
- 1x laub khawm
- 1 x 5 V relay
- 1 x 47µF capacitor
- 4x 1 k resistor
- 1 x 10 k resistor
- 1x 2.5mm audio Jack + ~ 15cm xaim
- Hlau
- Roj teeb sab nraud + cable los txuas rau lub zog arduino
Cov Cuab Yeej:
- Soldering hlau
- 3D tshuab luam ntawv
- Breadboard + jumper xov hlau (tsab ntawv)
Kauj ruam 1: PROTOTYPING
Yog tias koj ua cov lus qhia no kom ntseeg tau tias koj qhov kev xav tau muaj "BULB" hom thiab lub hli 2.5 hli ntsaws rau lub chaw taws teeb.
Thaum lub nplhaib A thiab B txuas nrog, lub koob yees duab thaij duab, hauv kuv qhov kev sib txuas yog tsim los ntawm kev xa tawm.
Kuv siv lub khob cij los ntsuas lub Circuit Court thiab cov cai, txhua yam ua haujlwm tau zoo (lub xiav LED sawv cev rau kev xa tawm)
Kauj ruam 2: BOX + ASSEMBLY
Kuv tau ua 3D lub thawv luam ntawv siv fusion 360, luam tawm nrog qhov ua kom zoo 3. Yog tias koj tsis muaj kev nkag mus rau lub tshuab luam ntawv 3D koj tuaj yeem laum qhov hauv lub thawv yas project lossis txawm tias ua lub thawv tawm ntawm ntoo.
Txhua lub Cheebtsam haum haum rau hauv lub thawv, yog li tsis txhob siv cov xov hlau ntev dhau hauv Circuit Court.
Kuv tau luam tawm lwm qhov txhawm rau tso lub intervalometer rau ntawm lub khau kub khau. Thaum lub rooj sib dhos ua tiav koj tuaj yeem lo lub npog rau ntawm lub thawv thiab lub khau kub hloov pauv hauv qab lub thawv.
Kauj Ruam 3: YUAV UA LI CAS SIV
- Npaj lub tsom iav raj thiab tso lub koob yees duab rau nws
- Muab lub intervalometer tso rau ntawm lub koob yees duab
- Txuas lub hli 2.5 hli
- Teem lub koob yees duab ntawm BULB hom
- Hwj chim lub intervalometer (a "5" tshwm)
- Tig lub encoder los teeb lub sijhawm raug
- Nias tus encoder kom pib tua
- Cia ob peb teev
- Nias lub khawm pib dua kom tsis txhob tua
NB: koj yuav tsum tuaj yeem ua rau nws tua lub sijhawm dhau los ntawm kev hloov HIGH thiab LOW ntawm "relais" hauv ntu ntu ntawm txoj cai. Txoj kev ntawd koj yuav teev sijhawm ntawm txhua daim duab.
Kauj ruam 4: RESULTS
ntawm no yog ob lub hlis ntawm Astrophotography nrog lub intervalometer
- M81 & M82
- M33
- M31
- M27
- M52 & NGC7635
Lub tsom iav raj yog 150/750 los ntawm Skywatcher thiab lub koob yees duab yog Canon 750D
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