HAT-P-19b - transito di esopianeta - 18 settembre 2015 (Giuseppe Nicosia)

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HAT-P-19b - transito di esopianeta - 18 settembre 2015

Si può osservare un transito di un esopianeta con una fotocamera digitale? Ho voluto fare un esperimento approfittando del fatto che la sera del 18 settembre era previsto il transito dell'esopianeta HAT-P-19b. Ho fatto 79 pose da 80 secondi (1600 ISO) intervallate da 60 secondi di pausa, perché così credevo di non fare riscaldare troppo il sensore (usavo anche una ventolina) con la Canon 600d modificata. Questa è la curva di luce ottenuta cominciando a scattare proprio all'inizio del transito alle 20:35 e finendo alle 23:47 (fine transito previsto per le 23:28). Telescopio Celestron CPC-800 a f/6,3, pose in altazimutale non guidate e calibrate con dark, flat e bias. Si avverte appena il calo previsto di poco più di 2 centesimi di magnitudine! La dispersione dei dati è notevole ma migliorabile. Intanto sarebbe stato meglio fare molte più pose senza lasciare un minuto di intervallo tra l'una e l'altra e poi la precisione credo possa migliorare se si usa l'autoguida. Farò altre prove in futuro.

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Distribution of astrophotographers

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	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
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Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

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HAT-P-19b - transito di esopianeta - 18 settembre 2015

HAT-P-19b - transito di esopianeta - 18 settembre 2015

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HAT-P-19b - transito di esopianeta - 18 settembre 2015

HAT-P-19b - transito di esopianeta - 18 settembre 2015

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