Cara Melihat Gerhana Matahari

Gerhana matahari merupakan peristiwa astronomis yang langka. Karena langka maka sangat sayang untuk dilewatkan. Untuk dapat melihat gerhana matahari secara aman, diperlukan peralatan dan cara tertentu. Tulisan dan gambar dari Dongeng Geologi berikut ini semoga dapat membantu untuk yang ingin mengamati gerhana matahari.

Ilustrasi kaca mata hitam. Foto : Dongeng Geologi.. https://rovicky.wordpress.com/2009/01/23/melihat-gerhana-matahari/
Ilustrasi kaca mata hitam. Foto : Dongeng Geologi.
Karena banyak yang ingin melihat gerhana, berikut salah satu petunjuk melihat gerhana matahari dengan aman.

Yang aman hanyalah kalau melihat gerhana ketika gerhana matahari total (GMT). Jadi sebenarnya melihat gerhana langsung dengan mata telanjang jelas tidak aman. Apalagi ketika gerhana matahari cincin (GMC), walaupun penutupannya 90% cahaya sunar matahari masih akan membahayakan mata apabila terlalu lama.

Dibawah ini beberapa cara untuk melihat atau mengamati GMC tersebut.

Yang paling aman memang menggunakan alat kacamata LAS.

Ilustrasi kacamata las. Foto : Dongeng Geologi.
Ilustrasi kacamata las. Foto : Dongeng Geologi.
Bisa berupa kacamata yang berupa kacamata biasa maupun yang seperti di gambar berikut ini.

Dibawah ini cara membuat alat untuk memproyeksikan matahari sehingga bisa diamati ketika matahari tertutup oleh bulan.
Membuat sendiri alat proyeksi matahari – 1 (Klik Gambarnya untuk memperbesar). Foto : Deongeng Geologi.
Membuat sendiri alat proyeksi matahari – 1 (Klik Gambarnya untuk memperbesar).
Foto : Deongeng Geologi.
Cara mengamati proyeksi matahari. Foto : Dongeng Geologi.
Cara mengamati proyeksi matahari. Foto : Dongeng Geologi.
Dapat juga menggunakan cara lain dibawah ini :
Cara ini lebih praktis. Perlu dicoba dahulu sebelum terjadinya gerhana matahari nanti. Foto : Dongeng Geologi.
Cara ini lebih praktis. Perlu dicoba dahulu sebelum terjadinya gerhana matahari nanti.
Foto : Dongeng Geologi.
Seandainya tidak memiliki waktu, amati saja nanti bayang-bayang matahari di bawah pohon. Mungkin kamu akan takjub melihatnya. Mungkin seperti di bawah ini.
Mengamati matahari di bawah pohon. Foto : Dongeng Geologi.
Yang perlu diingat adalah
jangan melihat matahari langsung !!

Walaupun mungkin penutupannya sudah maksimum, usahakan jangan terlalu lama dan perlu istirahat dulu sebelum mengamati lagi.

Walaupun hanya 1% permukaan matahari yang terlihat dari bumi, kekuatan cahayanya sama dengan 10 000 kali bulan purnama !. Bayangkan ada sepuluh ribu bulan purnama menyinari bumi ! Tentusaja 1% sudah sangat terang dan mampu membutakan mata. Padahal nantinya permukaan matahari tertutup maksimum dan sangat cepat membuka lagi. Pupil mata manusia tidak akan sempat berreaksi.

Juga harus hati-hati kalau menggunakan teropong, justru teropong ini akan memfocuskan cahaya dari lensa-lensa-nya.

Mata kita sangat sensitif terhadap sinar UltraViolet. Pada saat cahaya redup, pupil mata membuka tetapi cahaya UV yang masuk akan terlalu banyak untuk mata telanjang. Kalau terjadi, maka mata bisa buta sementara atau bahkan permanen bila terlalu lama.

Selamat melihat gerhana matahari ya ....


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